Long-term Employee Benefits - Schedule of Net Benefit Cost (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Successor [Member]
Changes in plan assets and benefit obligations recognized in other comprehensive (income) loss:
Net actuarial (gain) loss, net		$ 2.2	$ 55.6	$ (11.0)
Successor [Member] | Pension Plan [Member]
Net periodic benefit cost:
Service cost		12.0	15.4	17.0
Interest cost		16.9	22.9	21.2
Expected return on plan assets		(14.6)	(14.8)	(11.9)
Amortization of actuarial (gain) loss, net		0.4	(0.3)	0.0
Amortization of prior service credit		(0.1)	0.0	0.0
Curtailment gain		0.0	(7.3)	0.0
Settlement loss		0.5	0.1	0.0
Net periodic benefit cost		15.1	16.0	26.3
Changes in plan assets and benefit obligations recognized in other comprehensive (income) loss:
Net actuarial (gain) loss, net		(3.4)	60.6	(10.6)
Amortization of actuarial gain (loss), net		(0.4)	0.3	0.0
Prior service (credit) cost		2.7	(4.3)	(0.4)
Amortization of prior service credit		0.1	0.0	0.0
Settlement loss		(0.5)	(0.1)	0.0
Curtailment gain		0.0	7.3	0.0
Other adjustments		0.0	(4.9)	0.6
Total (gain) loss recognized in other comprehensive income		(1.5)	58.9	(10.4)
Total recognized in net periodic benefit cost and other comprehensive (income) loss		13.6	74.9	15.9
Successor [Member] | Other Postretirement Benefit Plan [Member]
Net periodic benefit cost:
Service cost		0.0	0.1	0.2
Interest cost		0.0	0.1	0.2
Amortization of actuarial (gain) loss, net		0.0	0.1	0.0
Amortization of prior service credit		(3.7)	(1.4)	0.0
Settlement loss		0.3	0.0	0.0
Net periodic benefit cost		(3.4)	(1.1)	0.4
Changes in plan assets and benefit obligations recognized in other comprehensive (income) loss:
Net actuarial (gain) loss, net		0.0	(4.6)	(0.7)
Amortization of actuarial gain (loss), net		0.0	(0.1)	0.0
Prior service (credit) cost		0.0	0.0	0.0
Amortization of prior service credit		3.7	1.4	0.0
Settlement loss		(0.3)	0.0	0.0
Other adjustments		0.3	0.0	0.1
Total (gain) loss recognized in other comprehensive income		3.7	(3.3)	(0.6)
Total recognized in net periodic benefit cost and other comprehensive (income) loss		$ 0.3	$ (4.4)	$ (0.2)
Predecessor [Member]
Changes in plan assets and benefit obligations recognized in other comprehensive (income) loss:
Net actuarial (gain) loss, net	$ (1.1)
Predecessor [Member] | Pension Plan [Member]
Net periodic benefit cost:
Service cost	1.6
Interest cost	1.8
Expected return on plan assets	(1.9)
Amortization of actuarial (gain) loss, net	1.1
Amortization of prior service credit	0.0
Curtailment gain	0.0
Settlement loss	0.0
Net periodic benefit cost	2.6
Changes in plan assets and benefit obligations recognized in other comprehensive (income) loss:
Net actuarial (gain) loss, net	0.0
Amortization of actuarial gain (loss), net	(1.1)
Prior service (credit) cost	0.0
Amortization of prior service credit	0.0
Settlement loss	0.0
Curtailment gain	0.0
Other adjustments	0.0
Total (gain) loss recognized in other comprehensive income	(1.1)
Total recognized in net periodic benefit cost and other comprehensive (income) loss	1.5
Predecessor [Member] | Other Postretirement Benefit Plan [Member]
Net periodic benefit cost:
Service cost	0.0
Interest cost	0.0
Amortization of actuarial (gain) loss, net	0.0
Amortization of prior service credit	0.0
Settlement loss	0.0
Net periodic benefit cost	0.0
Changes in plan assets and benefit obligations recognized in other comprehensive (income) loss:
Net actuarial (gain) loss, net	0.0
Amortization of actuarial gain (loss), net	0.0
Prior service (credit) cost	0.0
Amortization of prior service credit	0.0
Settlement loss	0.0
Other adjustments	0.0
Total (gain) loss recognized in other comprehensive income	0.0
Total recognized in net periodic benefit cost and other comprehensive (income) loss	$ 0.0