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Estimated interest payment next twelve months.

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Estimated interest payments year five.

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Estimated interest payments year four.

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Estimated interest payments year three.

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Estimated interest payments year two.

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Amount of amortization expense attributable to debt issuance costs.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Date the debt instrument was offered for sale, in YYYY-MM-DD format.

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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.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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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.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Debt - Additional Information (Details) - USD ($) $ in Millions						12 Months Ended
	Nov. 30, 2023	Sep. 21, 2021	Nov. 21, 2019	Dec. 13, 2017	Sep. 05, 2014	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Oct. 31, 2021
Debt Instrument [Line Items]
Redeemed Value of Notes						$ 2,891.7	$ 2,491.5
Annual principal maturities for debt
2024						400.0
2025						0.0
2026						0.0
2027						500.0
2028						2.0
Interest payments						84.8	85.6	$ 149.6
Estimated interest payments for 2024						107.0
Estimated interest payments for 2025						92.4
Estimated interest payments for 2026						92.4
Estimated interest payments for 2027						92.4
Estimated interest payments for 2028						1,035.6
Amortization of financing costs						$ 1.6	1.6	3.4
Write-off of deferred debt issuance costs								1.4
Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument offering date						Jun. 08, 2021
Redeemed Value of Notes						$ 350.0
Debt instrument, term						5 years
Line of Credit
Debt Instrument [Line Items]
Redeemed Value of Notes						$ 0.0	$ 0.0
Unused borrowing capacity						$ 323.0
5.70% Senior Notes, Due December 2033 \| Senior Notes
Debt Instrument [Line Items]
Debt, face amount	$ 400.0
Debt, stated interest rate	5.70%					5.70%	5.70%
Redeemed Value of Notes						$ 399.7	$ 0.0
Debt instrument, maturity date	Dec. 01, 2033					Dec. 01, 2033	Dec. 01, 2033
3.65% Senior Notes, Due September 2024 \| Senior Notes
Debt Instrument [Line Items]
Debt, face amount					$ 400.0
Debt, stated interest rate	3.65%				3.65%	3.65%	3.65%
Debt issuance costs						$ 3.7
Redeemed Value of Notes						$ 399.9	$ 399.8
Debt instrument, maturity date					Sep. 15, 2024	Sep. 15, 2024	Sep. 15, 2024
3.40% Senior Notes, Due December 2027 \| Senior Notes
Debt Instrument [Line Items]
Debt, face amount				$ 500.0
Debt, stated interest rate				3.40%		3.40%	3.40%
Redeemed Value of Notes						$ 499.3	$ 499.1
Debt instrument, maturity date				Dec. 15, 2027		Dec. 15, 2027	Dec. 15, 2027
3.00% Senior Notes, Due December 2029 \| Senior Notes
Debt Instrument [Line Items]
Debt, face amount			$ 500.0
Debt, stated interest rate			3.00%			3.00%	3.00%
Redeemed Value of Notes						$ 499.6	$ 499.5
Debt instrument, maturity date			Dec. 15, 2029			Dec. 15, 2029	Dec. 15, 2029
4.05% Senior Notes, Due December 2049 \| Senior Notes
Debt Instrument [Line Items]
Debt, face amount			$ 400.0
Debt, stated interest rate			4.05%			4.05%	4.05%
Redeemed Value of Notes						$ 396.7	$ 396.7
Debt instrument, maturity date			Dec. 15, 2049			Dec. 15, 2049	Dec. 15, 2049
3.05% Senior Notes, Due October 2051 \| Senior Notes
Debt Instrument [Line Items]
Debt, face amount		$ 700.0
Debt, stated interest rate		3.05%				3.05%	3.05%
Redeemed Value of Notes						$ 696.5	$ 696.4
Debt instrument, maturity date		Oct. 01, 2051				Oct. 01, 2051	Oct. 01, 2051
3.65% Senior Notes, due September 2024
Debt Instrument [Line Items]
Debt, stated interest rate									4.50%
Debt instrument, redemption amount included premiums, accrued and unpaid interest									$ 769.8
Fixed-Rate Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Book value of fixed rate debt						$ 2,891.7
Long-term debt (fixed-rate debt), fair value						2,568.2
3.05% Senior Notes, due October 2021
Debt Instrument [Line Items]
Debt, stated interest rate									3.05%
Redemption Premiums
Annual principal maturities for debt
Interest payments						56.1
Bond
Annual principal maturities for debt
Amortization of financing costs						0.5	$ 0.5	$ 1.0
Write-off of deferred debt issuance costs						$ 0.5