Cost of Contracts, net (Tables)

12 Months Ended

Dec. 31, 2016

Other Deferred Costs, Net [Abstract]

Schedule of cost of contracts, net

Cost of contracts, net, is comprised of the following:

	December 31,
(millions)	2016			2015
Cost of contracts	$	30.4		$	31.3
Accumulated amortization	(19.0		)	(19.4		)
Cost of contracts, net	$	11.4		$	11.9

Schedule of expected future amortization of cost of contracts

The expected future amortization of cost of contracts is as follows:

(millions)	Cost of Contract
2017	$	3.1
2018	2.7
2019	2.0
2020	1.0
2021	0.5
2022 and Thereafter	2.1
Total	$	11.4