Components of Deferred Tax Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred Tax Assets, Net [Abstract]
Postretirement/post-employment benefits	$ 15.5	$ 12.4
Deferred compensation	65.1	78.1
Pension costs	0.4	6.7
Basis differences in fixed assets	0.0	0.0
Interest	18.1	38.7
Accruals and reserves	37.0	34.8
Allowance for doubtful accounts	11.3	12.5
Deferred Tax Assets, Property, Plant and Equipment	72.6	(6.3)
Basis differences in intangible assets	395.3	(369.8)
Deferred Tax Liabilities, ROU	252.8	(269.8)
Deferred Tax Liabilities, Leasing Arrangements	322.7	343.5
Tax loss/tax credit carry forwards	260.4	267.0
Prepaid expenses	11.4	(10.0)
Deferred revenue	1.8	(1.8)
Unremitted foreign earnings	7.0	(4.9)
Deferred Tax and Other Liabilities, Noncurrent	668.3	(656.3)
Other	71.1	43.3
Net deferred tax assets	874.2	843.3
Deferred Tax Assets, Valuation Allowance	(162.5)	(145.8)	$ (146.0)	$ (197.1)
Deferred Tax Assets, Net	43.4	41.2
Total deferred tax assets, net	711.7	697.5
Foreign Income Tax Expense (Benefit), Continuing Operations	165.1	150.2	$ 106.7
Deferred Tax Assets	265.0	271.7
Deferred Tax Liabilities	$ 221.6	$ 230.5