Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Minimum rental commitments under non-cancelable leases

As of December 31, 2017, minimum rental commitments under non-cancelable leases, net of income from subleases, for each of the next five years and total thereafter were as follows:

(In millions)	2018			2019			2020			2021			2022			Thereafter			Total
Minimum lease payments	$	72.6		$	72.3		$	68.4		$	66.9		$	65.7		$	271.1		$	617.0
Less: income from subleases (1)	(24.3		)	(24.7		)	(23.9		)	(22.3		)	(22.0		)	(71.3		)	(188.5		)
Net minimum lease payments	$	48.3		$	47.6		$	44.5		$	44.6		$	43.7		$	199.8		$	428.5