Goodwill and Intangible Assets (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill
Balance at the beginning of the period	$ 5,862	$ 6,277
Additions	7,610
Foreign currency translation and other adjustments	(304)	(415)
Balance at the end pf the period	$ 13,168	$ 5,862