Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Amortization of Intangible Assets	$ 89	$ 133
Continuing Operations [Member]
Goodwill [Line Items]
Amortization of Intangible Assets	$ 89	$ 133	$ 163