Derivative Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2011 years	Jun. 30, 2011 years	Dec. 31, 2010
Derivatives Fair Value [Line Items]
Interest rate swaps asset, fair value hedge, at fair value	$ 223	$ 223	$ 176
Foreign currency forwards asset, cash flow hedge, at fair value	0	0	1
Total derivative assets at fair value	223	223	177
Cross-currency swaps liability, cash flow hedge, at fair value	48	48	0
Equity award reimbursement obligation, nondesignated instrument, at fair value	22	22	20
Total derivative liabilities at fair value	70	70	20
Notional amount of interest rate derivatives	7,850	7,850
Cash flow hedge loss reclassified to other expense, net	(10)	(10)
Long-term debt foreign currency remeasurement gain recorded in other expense, net	10	10
Weighted-average remaining contract term of Time Warner stock optiosn held by TWC employees (in years)	1.60	1.60
Other Current Assets [Member]
Derivatives Fair Value [Line Items]
Interest rate swaps asset, fair value hedge, at fair value	2	2	0
Foreign currency forwards asset, cash flow hedge, at fair value	0	0	1
Other Assets [Member]
Derivatives Fair Value [Line Items]
Interest rate swaps asset, fair value hedge, at fair value	221	221	176
Other Current Liabilities [Member]
Derivatives Fair Value [Line Items]
Equity award reimbursement obligation, nondesignated instrument, at fair value	22	22	20
Other Liabilities [Member]
Derivatives Fair Value [Line Items]
Cross-currency swaps liability, cash flow hedge, at fair value	$ 48	$ 48	$ 0