Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Lease Payments under Operating Leases

Future minimum lease payments under operating leases as of December 31, 2017 are presented below:

(In millions)	Operating leases
2018	$	188.5
2019	164.8
2020	155.2
2021	146.6
2022	128.8
Thereafter	795.8
	$	1,579.7