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Supplemental Financial Information (Other Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Supplemental Financial Information [Abstract]
Unrecognized tax benefits (inclusive of interest and penalties)	$ 285.2	$ 320.2
Pension and other post-retirement benefits	199.2	204.0
Other	60.4	56.9
Other liabilities	$ 544.8	$ 581.1

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Amount of expenses incurred but not yet paid classified as other, due after one year or the normal operating cycle, if longer.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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