| Revenue | $m | 16.1dRevenue, Q4 FY2023, three months to 2023-09-30$16.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 3.6Revenue, Q1 FY2024, three months to 2023-12-31$3.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-02-10, accession 0001628280-25-004634.Report this figure | 0.0Revenue, Q2 FY2024, three months to 2024-03-31$0. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-05-12, accession 0001628280-25-024666.Report this figure | 0.0Revenue, Q3 FY2024, three months to 2024-06-30$0. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-08-07, accession 0001628280-25-038858.Report this figure | 0.0dRevenue, Q4 FY2024, three months to 2024-09-30$0. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 2.5Revenue, Q1 FY2025, three months to 2024-12-31$2.5m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 543Revenue, Q2 FY2025, three months to 2025-03-31$542.7m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | 27.8Revenue, Q3 FY2025, three months to 2025-06-30$27.8m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure | 256dRevenue, Q4 FY2025, three months to 2025-09-30$256.5m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 264Revenue, Q1 FY2026, three months to 2025-12-31$264.0m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 73.7Revenue, Q2 FY2026, three months to 2026-03-31$73.7m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | 75.3Revenue, Q3 FY2026, three months to 2026-06-30$75.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure |
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| Research and development | $m | not reported | not reported | not reported | not reported | not reported | 137Research and development, Q1 FY2025, three months to 2024-12-31$137.0m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 133Research and development, Q2 FY2025, three months to 2025-03-31$133.1m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | 162Research and development, Q3 FY2025, three months to 2025-06-30$162.4m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure | 175dResearch and development, Q4 FY2025, three months to 2025-09-30$174.7m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 177Research and development, Q1 FY2026, three months to 2025-12-31$177.2m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 173Research and development, Q2 FY2026, three months to 2026-03-31$173.3m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | 198Research and development, Q3 FY2026, three months to 2026-06-30$198.2m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure |
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| Selling, general and administrative | $m | not reported | not reported | not reported | not reported | not reported | not reported | 28.4Selling, general and administrative, Q2 FY2025, three months to 2025-03-31$28.4m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | 30.9Selling, general and administrative, Q3 FY2025, three months to 2025-06-30$30.9m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure | not reported | not reported | 41.7Selling, general and administrative, Q2 FY2026, three months to 2026-03-31$41.7m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | 47.1Selling, general and administrative, Q3 FY2026, three months to 2026-06-30$47.1m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure |
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| Operating income | $m | (108)dOperating income, Q4 FY2023, three months to 2023-09-30−$108.3m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | (137)Operating income, Q1 FY2024, three months to 2023-12-31−$136.5m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-02-10, accession 0001628280-25-004634.Report this figure | (126)Operating income, Q2 FY2024, three months to 2024-03-31−$126.2m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-05-12, accession 0001628280-25-024666.Report this figure | (176)Operating income, Q3 FY2024, three months to 2024-06-30−$176.1m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-08-07, accession 0001628280-25-038858.Report this figure | (162)dOperating income, Q4 FY2024, three months to 2024-09-30−$162.2m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | (161)Operating income, Q1 FY2025, three months to 2024-12-31−$161.4m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 381Operating income, Q2 FY2025, three months to 2025-03-31$381.2m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | (166)Operating income, Q3 FY2025, three months to 2025-06-30−$165.6m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure | 44.1dOperating income, Q4 FY2025, three months to 2025-09-30$44.1m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 40.8Operating income, Q1 FY2026, three months to 2025-12-31$40.8m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | (141)Operating income, Q2 FY2026, three months to 2026-03-31−$141.3m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | (170)Operating income, Q3 FY2026, three months to 2026-06-30−$170.1m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure |
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| Interest expense | $m | 5.3dInterest expense, Q4 FY2023, three months to 2023-09-30$5.3m. XBRL concept us-gaap:InterestExpense. 10-K filed 2023-11-29, accession 0001628280-23-040219. Derived: 12-month figure less the 9-month figure.Report this figure | 5.4Interest expense, Q1 FY2024, three months to 2023-12-31$5.4m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2024-02-06, accession 0001628280-24-003492.Report this figure | 7.2Interest expense, Q2 FY2024, three months to 2024-03-31$7.2m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2024-05-09, accession 0001628280-24-022215.Report this figure | 5.1Interest expense, Q3 FY2024, three months to 2024-06-30$5.1m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2025-08-07, accession 0001628280-25-038858.Report this figure | 14.6dInterest expense, Q4 FY2024, three months to 2024-09-30$14.6m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 21.6Interest expense, Q1 FY2025, three months to 2024-12-31$21.6m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 21.6Interest expense, Q2 FY2025, three months to 2025-03-31$21.6m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | 24.4Interest expense, Q3 FY2025, three months to 2025-06-30$24.4m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure | 21.7dInterest expense, Q4 FY2025, three months to 2025-09-30$21.7m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 22.5Interest expense, Q1 FY2026, three months to 2025-12-31$22.5m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 23.8Interest expense, Q2 FY2026, three months to 2026-03-31$23.8m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | 24.6Interest expense, Q3 FY2026, three months to 2026-06-30$24.6m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure |
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| Income tax | $m | 2.0dIncome tax, Q4 FY2023, three months to 2023-09-30$2.0m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | (3.3)Income tax, Q1 FY2024, three months to 2023-12-31−$3.3m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-02-10, accession 0001628280-25-004634.Report this figure | 0.0Income tax, Q2 FY2024, three months to 2024-03-31$0. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-05-12, accession 0001628280-25-024666.Report this figure | 0.0Income tax, Q3 FY2024, three months to 2024-06-30$0. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-08-07, accession 0001628280-25-038858.Report this figure | 0.5dIncome tax, Q4 FY2024, three months to 2024-09-30$546.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 0.1Income tax, Q1 FY2025, three months to 2024-12-31$103.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 1.8Income tax, Q2 FY2025, three months to 2025-03-31$1.8m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | (0.4)Income tax, Q3 FY2025, three months to 2025-06-30−$437.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure | 20.0dIncome tax, Q4 FY2025, three months to 2025-09-30$20.0m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 0.0Income tax, Q1 FY2026, three months to 2025-12-31$29.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 0.0Income tax, Q2 FY2026, three months to 2026-03-31$7.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | 0.0Income tax, Q3 FY2026, three months to 2026-06-30$11.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure |
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| Net income | $m | (110)dNet income, Q4 FY2023, three months to 2023-09-30−$109.7m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | (133)Net income, Q1 FY2024, three months to 2023-12-31−$132.9m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-02-10, accession 0001628280-25-004634.Report this figure | (125)Net income, Q2 FY2024, three months to 2024-03-31−$125.3m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-05-12, accession 0001628280-25-024666.Report this figure | (171)Net income, Q3 FY2024, three months to 2024-06-30−$170.8m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-08-07, accession 0001628280-25-038858.Report this figure | (171)dNet income, Q4 FY2024, three months to 2024-09-30−$170.5m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | (173)Net income, Q1 FY2025, three months to 2024-12-31−$173.1m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 370Net income, Q2 FY2025, three months to 2025-03-31$370.4m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | (175)Net income, Q3 FY2025, three months to 2025-06-30−$175.2m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure | (23.8)dNet income, Q4 FY2025, three months to 2025-09-30−$23.8m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-11-25, accession 0000879407-25-000029. Derived: 12-month figure less the 9-month figure.Report this figure | 30.8Net income, Q1 FY2026, three months to 2025-12-31$30.8m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | (133)Net income, Q2 FY2026, three months to 2026-03-31−$132.7m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | (194)Net income, Q3 FY2026, three months to 2026-06-30−$194.3m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure |
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| Diluted EPS | $ per share | not reported | (1.24)Diluted EPS, Q1 FY2024, three months to 2023-12-31−$1.24 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-02-10, accession 0001628280-25-004634.Report this figure | (1.02)Diluted EPS, Q2 FY2024, three months to 2024-03-31−$1.02 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-05-12, accession 0001628280-25-024666.Report this figure | (1.38)Diluted EPS, Q3 FY2024, three months to 2024-06-30−$1.38 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-08-07, accession 0001628280-25-038858.Report this figure | not reported | (1.39)Diluted EPS, Q1 FY2025, three months to 2024-12-31−$1.39 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 2.75Diluted EPS, Q2 FY2025, three months to 2025-03-31$2.75 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | (1.26)Diluted EPS, Q3 FY2025, three months to 2025-06-30−$1.26 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure | not reported | 0.22Diluted EPS, Q1 FY2026, three months to 2025-12-31$0.22 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | (0.93)Diluted EPS, Q2 FY2026, three months to 2026-03-31−$0.93 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | (1.36)Diluted EPS, Q3 FY2026, three months to 2026-06-30−$1.36 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure |
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| Basic EPS | $ per share | not reported | (1.24)Basic EPS, Q1 FY2024, three months to 2023-12-31−$1.24 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-02-10, accession 0001628280-25-004634.Report this figure | (1.02)Basic EPS, Q2 FY2024, three months to 2024-03-31−$1.02 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-05-12, accession 0001628280-25-024666.Report this figure | (1.38)Basic EPS, Q3 FY2024, three months to 2024-06-30−$1.38 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-08-07, accession 0001628280-25-038858.Report this figure | not reported | (1.39)Basic EPS, Q1 FY2025, three months to 2024-12-31−$1.39 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | 2.78Basic EPS, Q2 FY2025, three months to 2025-03-31$2.78 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | (1.26)Basic EPS, Q3 FY2025, three months to 2025-06-30−$1.26 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure | not reported | 0.22Basic EPS, Q1 FY2026, three months to 2025-12-31$0.22 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-02-05, accession 0000879407-26-000034.Report this figure | (0.93)Basic EPS, Q2 FY2026, three months to 2026-03-31−$0.93 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-05-07, accession 0000879407-26-000047.Report this figure | (1.36)Basic EPS, Q3 FY2026, three months to 2026-06-30−$1.36 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-08-04, accession 0000879407-26-000057.Report this figure |
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