Business Segment and Geographic Information - Segment Revenue, Segment Profit or Loss, and Significant Segment Expenses (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Segment Reporting [Abstract] | ||||
| Revenue | $ 1,157.1 | $ 1,004.3 | $ 2,193.1 | $ 1,925.3 |
| Cost of sales | 468.3 | 377.6 | 915.3 | 736.7 |
| Payroll related expenses | 222.0 | 189.5 | 442.2 | 389.3 |
| Stock-based compensation expense | 41.3 | 40.6 | 72.3 | 75.9 |
| Marketing expense | 78.8 | 86.4 | 149.2 | 147.9 |
| Travel related expenses | 14.3 | 16.1 | 33.9 | 37.1 |
| Supply expenses and clinical trials | 14.4 | 17.0 | 28.1 | 32.7 |
| Consulting & professional fees | 35.1 | 57.2 | 67.8 | 115.2 |
| Equipment, office & facility expenses | 22.5 | 20.9 | 44.0 | 43.1 |
| IT software and data | 36.0 | 31.3 | 71.1 | 63.4 |
| Depreciation and amortization | 9.3 | 9.4 | 18.5 | 21.1 |
| Other segment items | 2.5 | 0.3 | 4.4 | 3.8 |
| Operating income | 212.6 | 158.0 | 346.3 | 259.1 |
| Other income, net | 28.5 | 29.8 | 49.1 | 61.2 |
| Income tax expense | 61.3 | 44.3 | 110.2 | 30.4 |
| Net income | 179.8 | 143.5 | 285.2 | 289.9 |
| Depreciation and amortization | 63.0 | 52.1 | 123.0 | 104.6 |
| Expenditures for long-lived assets | 94.1 | 66.1 | 181.1 | 123.0 |
| Deferred income taxes | $ 8.9 | $ 14.7 | $ 14.7 | $ 56.5 |
| X | ||||||||||
- Definition Equipment, Office And Facility Expenses No definition available.
|
| X | ||||||||||
- Definition Payroll Related Expenses No definition available.
|
| X | ||||||||||
- Definition Share-Based Payment Arrangement, Operating Expense No definition available.
|
| X | ||||||||||
- Definition Supply Expenses And Clinical Trials No definition available.
|
| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount of expenses incurred in the period for information technology and data processing products and services. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services. Costs of public relations and corporate promotions are typically considered to be marketing costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of expenditure for addition to long-lived assets included in determination of segment assets by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Excludes expenditure for addition to financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of other expense (income) and loss (gain) calculated as difference between segment revenue and separately disclosed expense category to arrive at segment profit (loss). Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Expenses incurred for travel and entertainment during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|