Intangible Assets Including Goodwill - Intangible Assets Activity (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Intangible Assets Including Goodwill:
Net carrying amount increase			$ 1,662
Intangible asset amortization expense	$ 398	$ 296	745	$ 594
Retirement of fully amortized intangible assets			$ 283