Investment in Affiliates - Summary of Unaudited Financial Information Related to the Income Statement (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]
Net operating revenues	$ 1,424	$ 1,357	$ 1,369
Operating expenses	666	638	675
Operating income	758	719	694
Net income	744	696	664
FDC equity earnings	$ 239	$ 220	$ 188