Balance Sheet Accounts and Supplemental Disclosures - Intangible Assets (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Nov. 30, 2015	Nov. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 157.3	$ 157.3
Accumulated Amortization	49.6	62.9
Net Carrying Amount	107.7	94.4
Amortization expense	1.1	13.3	$ 13.4	$ 13.5
2017		13.1
2018		13.1
2019		13.0
2020		12.8
2021		9.3
Total		61.3
Customer Related [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	83.8	83.8
Accumulated Amortization	28.3	37.4
Net Carrying Amount	55.5	46.4
Intellectual Property\Trade Secrets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	34.2	34.2
Accumulated Amortization	6.6	9.2
Net Carrying Amount	27.6	25.0
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0.5	0.5
Accumulated Amortization	0.4	0.5
Net Carrying Amount	0.1	0.0
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	20.5	20.5
Accumulated Amortization	1.7	2.4
Net Carrying Amount	18.8	18.1
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	18.3	18.3
Accumulated Amortization	12.6	13.4
Net Carrying Amount	$ 5.7	$ 4.9