Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Rental Commitments Under Operating Lease

Future minimum rental commitments under operating leases are as follows:

Year Ended December 31	Amount
2018	$	86.2
2019		57.4
2020		42.8
2021		28.5
2022		18.0
2023 and thereafter		31.0
	$	263.9