Leases (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Minimum Remaining Lease Term		1 year
Remaining lease terms		20 years
Lessee, Operating Lease, Description [Abstract]
Operating lease cost	$ 80.9	$ 240.3
Short-term lease cost	3.1	13.1
Sublease income	3.8	8.6
Total lease cost	$ 80.2	244.8
Cash paid for amounts included in the measurement of lease liabilities		247.2
Right-of-use assets obtained in exchange for lease liabilities		$ 359.0
Weighted-average remaining lease term	8 years	8 years
Weighted-average discount rate	4.32%	4.32%
Future Lease Payments [Abstract]
2019	$ 83.6	$ 83.6
2020	322.9	322.9
2021	291.5	291.5
2022	260.5	260.5
2023	202.3	202.3
Thereafter	861.2	861.2
Total future lease payments	2,022.0	2,022.0
Less: imputed interest	326.0	326.0
Present value of future lease payments	1,696.0	1,696.0
Less: current portion of operating leases	261.6	261.6	$ 0.0
Non-current operating leases	1,434.4	1,434.4	0.0
Future Lease Payments as of Prior Year End [Abstract]
Rent Obligations 2019			352.0
Sublease Rental Income 2019			7.7
Net Rent 2019			344.3
Rent Obligations 2020			324.3
Sublease Rental Income 2020			5.2
Net Rent 2020			319.1
Rent Obligations 2021			282.3
Sublease Rental Income 2021			2.2
Net Rent 2021			280.1
Rent Obligations 2022			242.5
Sublease Rental Income 2022			1.3
Net Rent 2022			241.2
Rent Obligations 2023			184.0
Sublease Rental Income 2023			0.6
Net Rent 2023			183.4
Rent Obligations Thereafter			714.6
Sublease Rental Income Thereafter			0.5
Net Rent Thereafter			714.1
Rent Obligations			2,099.7
Sublease Rental Income			17.5
Net Rent			$ 2,082.2
Lessee, Operating Lease, Not yet Commenced, Description [Abstract]
Future lease payments for additional operating leases that have not yet commenced	$ 151.0	$ 151.0
Minimum Lease Term for Leases That Have Not Yet Commenced		4 years
Maximum Lease Term for Leases That Have Not Yet Commenced		15 years