Acquisitions, Dispositions And Other Adjustments (Fair Value of Assets Acquired And Liabilities Assumed) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015	Jul. 31, 2015
Assets acquired
Goodwill	$ 105,252	$ 104,568
DIRECTV [Member]
Assets acquired
Cash			$ 4,797
Accounts Receivable			2,038
All other current assets			1,534
Property, plant and equipment			9,320
Investments and other assets			2,375
Goodwill			34,619
Total assets acquired			90,868
Liabilities assumed
Current liabilities, excluding current portion of long-term debt			5,645
Long-term debt			20,585
Other noncurrent liabilities			16,875
Total liabilities assumed			43,105
Net assets acquired			47,763
Noncontrolling interest			(354)
Aggregate value of consideration paid			47,409
DIRECTV [Member] | Customer lists and relationships [Member]
Assets acquired
Intangible assets subject to amortization			19,508
DIRECTV [Member] | Trade Names [Member]
Assets acquired
Intangible assets subject to amortization			2,915
DIRECTV [Member] | Other [Member]
Assets acquired
Intangible assets subject to amortization			445
DIRECTV [Member] | Orbital Slots [Member]
Assets acquired
Intangible assets not subject to amortization			11,946
DIRECTV [Member] | Trade Names [Member]
Assets acquired
Intangible assets not subject to amortization			$ 1,371