CONSOLIDATED STATEMENT OF EQUITY (USD $) In Millions	Total	TWC Shareholders' Equity [Member]	Noncontrolling Interests [Member]
Balance at beginning of period at Dec. 31, 2011	$ 7,537	$ 7,530	$ 7
Net income	1,645	1,642	3
Change in unrealized losses on pension benefit obligation, net of income tax provision of $8 million in 2012 and $36 million in 2013	9	9	0
Change in deferred losses on cash flow hedges, net of income tax provision of $6 million in 2012 and $58 million in 2013	9	9	0
Other comprehensive income	18	18	0
Comprehensive income	1,663	1,660	3
Equity-based compensation expense	104	104	0
Repurchase and retirement of common stock	(1,293)	(1,293)	0
Cash dividends declared ($1.68 per common share in 2012 and $1.95 per common share in 2013)	(529)	(529)	0
Shares issued upon the exercise of stock options	124	124	0
Taxes paid in lieu of shares issued for equity-based compensation	(43)	(43)	0
Excess tax benefit realized from equity-based compensation	55	55	0
Other changes	(1)	1	(2)
Balance at end of period at Sep. 30, 2012	7,617	7,609	8
Balance at beginning of period at Dec. 31, 2012	7,283	7,279	4
Net income	1,414	1,414	0
Change in unrealized losses on pension benefit obligation, net of income tax provision of $8 million in 2012 and $36 million in 2013	56	56	0
Change in deferred losses on cash flow hedges, net of income tax provision of $6 million in 2012 and $58 million in 2013	91	91	0
Other comprehensive income	147	147	0
Comprehensive income	1,561	1,561	0
Equity-based compensation expense	100	100	0
Repurchase and retirement of common stock	(1,844)	(1,844)	0
Cash dividends declared ($1.68 per common share in 2012 and $1.95 per common share in 2013)	(573)	(573)	0
Shares issued upon the exercise of stock options	124	124	0
Taxes paid in lieu of shares issued for equity-based compensation	(64)	(64)	0
Excess tax benefit realized from equity-based compensation	81	81	0
Other changes	(2)	(2)	0
Balance at end of period at Sep. 30, 2013	$ 6,666	$ 6,662	$ 4