Leases - Additional Lease Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) renewal_option	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Leases [Abstract]
Renewal term | renewal_option	1
Operating lease cost	$ 478.0	$ 464.5	$ 452.9
Short-term lease cost	43.8	41.1	39.7
Variable lease cost	84.4	80.7	73.6
Operating cash outflows from operating leases	461.4	446.1	430.9
Leased assets obtained in exchange for new operating lease liabilities	$ 505.2	$ 469.9	$ 346.4
Weighted average remaining lease term for operating leases	5 years 9 months 18 days	6 years	6 years
Weighted average discount rate for operating leases	3.00%	3.40%	3.90%