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Business Segment and Geographical Information - Schedule of Distribution of Income from Operations by Geographical Area (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2023 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from operations | $ (222,910) | $ 230,939 | $ 226,970 | $ 302,569 | $ 156,968 | $ 242,448 | $ 252,920 | $ 200,568 | $ 207,643 | $ 457,909 | $ 399,416 | $ 408,211 | $ 234,999 | $ 701,985 | $ 661,131
Amortization of intangible assets | (58,700) |  |  | (58,000) |  |  |  |  |  |  |  |  | (176,700) | (291,000) |
Operating Segments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from operations | 301,053 | 289,996 | 285,916 | 360,595 | 273,457 | 358,946 | 367,493 | 315,185 | 322,321 | 575,912 | 632,403 | 637,506 | 876,965 | 992,998 | 1,004,999
Amortization of intangible assets | (58,688) | (59,057) | (58,946) | (58,026) | (116,489) | (116,498) | (114,573) | (114,617) | (114,678) | (118,003) | (232,987) | (229,295) | (176,691) | (291,013) | (343,868)
Ireland |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from operations | 164,983 | 199,606 | 163,378 | 228,554 | 153,450 | 210,497 | 224,324 | 231,085 | 156,422 | 362,984 | 363,947 | 387,507 | 527,967 | 592,501 | 611,831
Rest of Europe |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from operations | 51,040 | 7,978 | 36,843 | 55,194 | 38,910 | 53,197 | 56,569 | 22,430 | 59,690 | 44,821 | 92,107 | 82,120 | 95,861 | 147,301 | 138,689
U.S. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from operations | 68,182 | 72,234 | 68,487 | 59,610 | 61,861 | 76,848 | 70,320 | 56,251 | 88,561 | 140,721 | 138,709 | 144,812 | 208,903 | 198,319 | 215,132
Rest of World |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from operations | $ 16,848 | $ 10,178 | $ 17,208 | $ 17,237 | $ 19,236 | $ 18,404 | $ 16,280 | $ 5,419 | $ 17,648 | $ 27,386 | $ 37,640 | $ 23,067 | $ 44,234 | $ 54,877 | $ 39,347

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