Debt - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Notes 4.500 Due 2025
Debt Additional Information
Debt Instrument, Repurchased Face Amount		$ 500.0
Cost Related to Early Retirement of Debt		67.3
4.000% Notes due 2024
Debt Additional Information
Debt Instrument, Repurchased Face Amount	$ 350.0
Cost Related to Early Retirement of Debt	3.0
7.405% junior subordinated debt securities due 2038
Debt Additional Information
Debt Instrument, Repurchased Face Amount	14.0
Cost Related to Early Retirement of Debt	1.2
Senior Notes \| 4.125% Senior Notes due 2051
Debt Additional Information
Debt Instrument, Face Amount		$ 600.0
Five-year Unsecured Revolving Credit Facility [Member]
Debt Additional Information
Line of Credit Facility, Maximum Borrowing Capacity	500.0
Line of Credit Facility, Additional Borrowing Capacity If Requested	200.0
Line of Credit Facility, Fair Value of Amount Outstanding	0.0
Letters of Credit Outstanding, Amount	0.4
Five-Year $350 million Term Loan Facility
Debt Additional Information
Line of Credit Facility, Maximum Borrowing Capacity	350.0
Line of Credit Facility, Fair Value of Amount Outstanding	$ 350.0

Debt Additional Information

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

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Face (par) amount of the original debt instrument that was repurchased.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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