Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Rental Payments for All Non-Cancelable Operating Leases

Future minimum rental payments for all non-cancelable operating leases (reduced by minor amounts from subleases) as of December 31, 2017 were as follows:

(in millions of dollars)
2018	$	28.1
2019	25.0
2020	21.6
2021	16.2
2022	12.2
Thereafter	17.6
Total minimum rental payments	120.7
Less minimum rentals to be received under non-cancelable subleases	2.0
Future minimum payments for operating leases, net of sublease rental income	$	118.7

Future Minimum Payments Under Unconditional Purchase Commitments

Future minimum payments under unconditional purchase commitments, primarily for inventory purchase commitments as of December 31, 2017 were as follows:

(in millions of dollars)
2018	$	96.8
2019	0.2
2020	0.1
2021	—
2022	—
Thereafter	—
Total unconditional purchase commitments	$	97.1