Leases (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Leases [Abstract]
Lessee, Operating Lease, Term of Contract	15 years	15 years
Operating Lease, Payments		$ (174.3)
Short-term Lease, Cost	$ 1.5	7.4
Variable Lease, Cost	$ 5.1	$ 14.3
leases not yet commenced	20	20
Operating Leases, Rent Expense		$ 291.5	$ 100.0
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 181.8	181.8		$ 191.1
Finance Lease, Liability, Payments, Due Next Twelve Months	3.6	3.6		8.6
Finance Lease, Liability, Payment, Due	158.1	158.1
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(113.1)	(113.1)
Finance Lease, Liability, Undiscounted Excess Amount	(57.0)	(57.0)
Operating Lease, Right-of-Use Asset	681.1	681.1
Operating Lease, Liability, Current	202.1	202.1		0.0
Operating Lease, Liability, Noncurrent	530.7	530.7		0.0
Operating Lease, Liability	732.8	732.8
Finance Lease, Right-of-Use Asset	85.6	85.6
Finance Lease, Liability, Current	8.3	8.3		7.9
Finance Lease, Liability, Noncurrent	92.8	92.8		51.0
Finance Lease, Liability	$ 101.1	$ 101.1
Operating Lease, Weighted Average Remaining Lease Term	7 years 4 months 24 days	7 years 4 months 24 days
Operating Lease, Cost	$ 58.9	$ 169.7
Finance Lease, Right-of-Use Asset, Amortization	2.0	6.5
Finance Lease, Interest Expense	$ 1.6	$ 4.8
Finance Lease, Weighted Average Remaining Lease Term	16 years 6 months	16 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	4.30%	4.30%
Finance Lease, Weighted Average Discount Rate, Percent	5.30%	5.30%
Operating Leases, Future Minimum Payments, Due in Two Years	$ 146.3	$ 146.3		145.4
Finance Lease, Liability, Payments, Due Year Two	13.8	13.8		8.0
Operating Leases, Future Minimum Payments, Due in Three Years	105.2	105.2		107.0
Finance Lease, Liability, Payments, Due Year Three	12.0	12.0		6.7
Operating Leases, Future Minimum Payments, Due in Four Years	77.7	77.7		80.9
Finance Lease, Liability, Payments, Due Year Four	10.8	10.8		6.0
Operating Leases, Future Minimum Payments, Due in Five Years	57.4	57.4		61.5
Finance Lease, Liability, Payments, Due Year Five	10.7	10.7		6.5
Operating Leases, Future Minimum Payments, Due Thereafter	277.5	277.5		155.6
Finance Lease, Liability, Payments, Due after Year Five	107.2	107.2		$ 23.1
Lessee, Operating Lease, Liability, Payments, Due	845.9	845.9
Lease, Cost	$ 3.6	11.3
Finance Lease, Interest Payment on Liability		(4.8)
Finance Lease, Principal Payments		(6.7)
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		50.8
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability		$ 0.2
Lessee, Operating Lease, Renewal Term	15 years	15 years