Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable - trade	$ 584	$ 454
Deferred revenue	364	352
Accrued liabilities:
Programming costs	1,985	1,783
Labor	975	1,111
Capital expenditures	1,308	1,107
Interest	984	958
Taxes and regulatory fees	548	538
Property and casualty	390	394
Other	985	847
Total accounts payable and accrued liabilities	$ 8,123	$ 7,544