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Debt - Additional Information (Details) - USD ($) $ in Millions |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 08, 2021 | Sep. 21, 2021 | Nov. 21, 2019 | Dec. 13, 2017 | Sep. 05, 2014 | Oct. 22, 2013 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Oct. 31, 2021
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemed Value of Notes |  |  |  |  |  |  | $ 2,491.5 | $ 2,491.0 |  |
Annual Principal Maturities for Debt [Abstract] |  |  |  |  |  |  |  |  |  |
2023 |  |  |  |  |  |  | 0.0 |  |  |
2024 |  |  |  |  |  |  | 400.0 |  |  |
2025 |  |  |  |  |  |  | 0.0 |  |  |
2026 and thereafter |  |  |  |  |  |  | 2,100.0 |  |  |
Interest payments |  |  |  |  |  |  | 85.6 | 149.6 | $ 97.0 |
Estimated interest payments for 2023 |  |  |  |  |  |  | 84.2 |  |  |
Estimated interest payments for 2024 |  |  |  |  |  |  | 84.2 |  |  |
Estimated interest payments for 2025 |  |  |  |  |  |  | 69.6 |  |  |
Estimated interest payments for 2026 |  |  |  |  |  |  | 968.4 |  |  |
Amortization of financing costs |  |  |  |  |  |  | 1.6 | 3.4 | $ 2.0 |
Write-off of deferred debt issuance costs |  |  |  |  |  |  | 1.4 |  |  |
Unsecured Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemed Value of Notes |  |  |  |  |  |  | $ 350.0 |  |  |
Debt instrument, term |  |  |  |  |  |  | 5 years |  |  |
Debt instrument, maturity date |  |  |  |  |  |  | Aug. 29, 2021 |  |  |
Debt instrument offering date |  |  |  |  |  |  | Jun. 08, 2021 |  |  |
Line of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemed Value of Notes |  |  |  |  |  |  | $ 0.0 | 0.0 |  |
Unused borrowing capacity |  |  |  |  |  |  |  | $ 321.3 |  |
4.05% Senior Notes, due December 2049 | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt, face amount |  |  | $ 400.0 |  |  |  |  |  |  |
Stated interest rate |  |  | 4.05% |  |  |  |  |  |  |
Debt instrument, maturity date |  |  | Dec. 15, 2049 |  |  |  |  | Dec. 15, 2049 | Dec. 15, 2049 |
3.65% Senior Notes, due September 2024 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  |  |  | 4.50%
Debt instrument, redemption amount included premiums, accrued and unpaid interest |  |  |  |  |  |  |  |  |  | $ 769.8
3.65% Senior Notes, due September 2024 | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt, face amount |  | $ 700.0 |  |  |  |  |  |  |  |
Redeemed Value of Notes |  |  |  |  |  |  | $ 399.8 | $ 399.6 |  |
Stated interest rate | 4.50% | 4.50% |  |  |  |  | 3.65% | 3.65% |  |
Debt instrument, maturity date |  | Nov. 01, 2023 |  |  |  | Nov. 01, 2023 |  | Nov. 01, 2023 | Nov. 01, 2023 |
Debt instrument, repurchase amount | $ 769.8 |  |  |  |  |  |  |  |  |
Debt instrument, redemption premium | 56.1 |  |  |  |  |  |  |  |  |
Debt instrument, accrued and unpaid interest | 13.7 |  |  |  |  |  |  |  |  |
Annual Principal Maturities for Debt [Abstract] |  |  |  |  |  |  |  |  |  |
Write-off of deferred debt issuance costs | 1.4 |  |  |  |  |  |  |  |  |
Write-off unamortized debt discount | $ 0.5 |  |  |  |  |  | $ 0.2 | $ 0.4 |  |
3.40% Senior Notes, due December 2027 | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt, face amount |  |  |  |  | $ 400.0 |  |  |  |  |
Redeemed Value of Notes |  |  |  |  |  |  | $ 499.1 | $ 499.0 |  |
Stated interest rate |  |  |  |  | 3.65% |  | 3.40% | 3.40% |  |
Debt instrument, maturity date |  |  |  |  | Sep. 15, 2024 |  |  | Sep. 15, 2024 | Sep. 15, 2024 |
Annual Principal Maturities for Debt [Abstract] |  |  |  |  |  |  |  |  |  |
Write-off unamortized debt discount |  |  |  |  |  |  | $ 0.9 | $ 1.0 |  |
3.00% Senior Notes, due December 2029 | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt, face amount |  |  | $ 500.0 | $ 500.0 |  |  |  |  |  |
Redeemed Value of Notes |  |  |  |  |  |  | $ 499.5 | $ 499.5 |  |
Stated interest rate |  |  | 3.00% | 3.40% |  |  | 3.00% | 3.00% |  |
Debt instrument, maturity date |  |  | Dec. 15, 2029 | Dec. 15, 2027 |  |  |  | Dec. 15, 2027 | Dec. 15, 2027 |
Annual Principal Maturities for Debt [Abstract] |  |  |  |  |  |  |  |  |  |
Write-off unamortized debt discount |  |  |  |  |  |  | $ 0.5 | $ 0.5 |  |
Fixed-Rate Senior Notes | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Book value of fixed rate debt |  |  |  |  |  |  | 2,491.5 |  |  |
Long-term debt (fixed-rate debt), fair value |  |  |  |  |  |  | 2,041.2 |  |  |
3.05% Senior Notes, due October 2051 | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt, face amount |  | $ 700.0 |  |  |  |  |  |  |  |
Redeemed Value of Notes |  |  |  |  |  |  | $ 696.4 | $ 696.3 |  |
Stated interest rate |  | 3.05% |  |  |  |  | 3.05% | 3.05% |  |
Debt instrument, maturity date |  | Dec. 31, 2051 |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  |  |  |  | $ 7.7 |  |
Annual Principal Maturities for Debt [Abstract] |  |  |  |  |  |  |  |  |  |
Write-off unamortized debt discount |  |  |  |  |  |  | $ 3.6 | $ 3.7 |  |
3.05% Senior Notes, due October 2021 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  |  |  | 3.05%
3.05% Senior Notes, due October 2021 | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, maturity date |  | Oct. 01, 2051 |  |  |  |  |  |  |  |
Redemption Premiums |  |  |  |  |  |  |  |  |  |
Annual Principal Maturities for Debt [Abstract] |  |  |  |  |  |  |  |  |  |
Interest payments |  |  |  |  |  |  | $ 56.1 |  |  |

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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4297-108586 + Details
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