Goodwill and Other Intangible Assets, net (Other Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Non-amortizable intangible assets	$ 1,455	$ 1,527
Amortizable intangible assets, gross carrying amount	1,598	1,609
Accumulated Amortization	583	513
Total other intangible assets	$ 3,053	$ 3,136