Employee Benefit Plans - Schedule of Net Periodic Benefit Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Defined Pension Benefits
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 1	$ 1
Interest cost	8	8
Expected return on plan assets	(15)	(14)
Amortization of transition obligation, prior service credit, and net actuarial loss (gain)	1	1
Net periodic benefit gain	(5)	(4)
Other Postretirement Benefits
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	0	0
Interest cost	2	2
Expected return on plan assets	0	0
Amortization of transition obligation, prior service credit, and net actuarial loss (gain)	(4)	(3)
Net periodic benefit gain	$ (2)	$ (1)