Income Tax - Deferred Tax Assets And Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets
Compensation-related obligations	$ 44.7	$ 54.8
Pension and postretirement benefits	33.7	24.5
Tax credit carryforwards	39.0	38.3
Tax loss carryforwards	291.1	359.0
Accrued liabilities and other	149.0	97.7
Valuation allowance	(57.2)	(60.7)
Deferred tax assets	500.3	513.6
Deferred tax liabilities
Fixed assets	358.9	422.4
Partnerships and investments	33.2	29.7
Intangible assets	2,563.2	2,539.7
Derivative instruments	31.5	19.5
Deferred tax liabilities	2,986.8	3,011.3
Net deferred tax liabilities	$ 2,486.5	$ 2,497.7