Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Lease Payments under These Non-cancelable Operating Leases

The approximate future minimum lease payments under these non-cancelable operating leases at December 31, 2016 are as follows (in millions):

	Amount
2017	$	9.6
2018		8.6
2019		8.2
2020		8.3
2021		6.2
Thereafter		31.2
	$	72.1