Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Payments Under Non-Cancelable Leases, Sublease Commitments and Related Party

The future minimum payments under non-cancelable leases, sublease commitments and related payments we are obligated to make, net of sublease commitments of third party lessees to make payments to us, as of December 31, 2017, are as follows:

	Payments		Sublease Receipts		Net Payments
	(in millions)
2018	$	131.6	$	44.2	$	87.4
2019	127.8		46.0		81.8
2020	107.5		29.7		77.8
2021	102.3		28.4		73.9
2022	91.3		25.3		66.0
2023 and thereafter	204.2		48.9		155.3
Total future minimum payments	$	764.7	$	222.5	$	542.2