Long-term Employee Benefits - Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Details) - Pension Plan [Member] - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Accumulated net actuarial losses	$ (76.6)	$ (48.3)
Accumulated prior service credit	0.9	1.5
Total	$ (75.7)	$ (46.8)