Leases - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Lessor, Lease, Description [Line Items]
Right-of-use assets	$ 232,400,000		$ 232,400,000		$ 431,700,000
Lease impairment	300,000	$ 0	94,500,000	$ 0
Rent concessions cares act	9,200,000	0	18,100,000	0
Negotiable cost reductions cares act	6,900,000		25,200,000
Sublease income	400,000	$ 500,000	1,200,000	$ 1,600,000
General and Administrative Expense
Lessor, Lease, Description [Line Items]
Lease impairment	1,300,000		1,300,000
Commercial
Lessor, Lease, Description [Line Items]
Lease impairment			95,800,000
Level 3
Lessor, Lease, Description [Line Items]
Right-of-use assets	271,000,000.0		271,000,000.0
Right-of-use asset, fair value	$ 175,200,000		$ 175,200,000