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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Fair Value Measurements
Impairment charge on right-of-use assets	$ 0.0	$ 41.0
Lease termination fees	0.2	$ 3.1
Recurring
Fair Value Measurements
Total	142.5		$ 380.9
Assets, Fair Value Disclosure	14.1		4.2
Foreign exchange forward
Fair Value Measurements
Interest rate swap liability	(5.3)		(0.7)
Forward currency contracts asset	0.1		2.2
Foreign exchange forward \| Recurring
Fair Value Measurements
Foreign Currency Contract, Asset, Fair Value Disclosure	0.1		2.2
Foreign Currency Contracts, Liability, Fair Value Disclosure	5.3		0.7
Interest rate swap asset
Fair Value Measurements
Interest rate swap liability			2.0
Forward currency contracts asset	14.0		2.0
Interest rate swap asset \| Recurring
Fair Value Measurements
Forward currency contracts asset	$ 14.0
Foreign Exchange Contract \| Maximum
Fair Value Measurements
Term of contract	180 days
Level 2
Fair Value Measurements
Fair value of company's debt	$ 5,417.7		5,595.5
Level 2 \| Recurring
Fair Value Measurements
Total	15.1		153.1
Assets, Fair Value Disclosure	14.1		4.2
Level 2 \| Foreign exchange forward \| Recurring
Fair Value Measurements
Foreign Currency Contract, Asset, Fair Value Disclosure	0.1		2.2
Foreign Currency Contracts, Liability, Fair Value Disclosure	5.3		0.7
Level 3 \| Recurring
Fair Value Measurements
Total	$ 127.4		$ 227.8