CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				7 Months Ended	9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Aug. 01, 2013	Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012	Dec. 31, 2011
Condensed Consolidating Balance Sheet
Cash and equivalents	$ 876		$ 3,853			$ 876		$ 3,853
Short-term investments in U.S. Treasury securities	250					250				150
Receivables, net	892					892				883
Receivables from affiliated parties	0					0				0
Deferred income tax assets	309					309				317
Other current assets	329					329				223
Total current assets	2,656					2,656				4,877
Investments in and amounts due from consolidated subsidiaries	0					0				0
Investments	83					83				87
Property, plant and equipment, net	14,627					14,627				14,742
Intangible assets subject to amortization, net	573					573				641
Intangible assets not subject to amortization	26,012					26,012				26,011
Goodwill	2,886					2,886				2,889
Other assets	594					594				562
Total assets	47,431					47,431				49,809
Accounts payable	468					468				647
Deferred revenue and subscriber-related liabilities	192					192				183
Payables to affiliated parties	0					0				0
Accrued programming expense	897					897				872
Current maturities of long-term debt	1,771					1,771				1,518
Mandatorily redeemable preferred equity issued by a subsidiary	0					0				300
Other current liabilities	1,636					1,636				1,805
Total current liabilities	4,964					4,964				5,325
Long-term debt	23,261					23,261				25,171
Deferred income tax liabilities, net	11,714					11,714				11,280
Long-term payables to affiliated parties	0					0				0
Other liabilities	826					826				750
Shareholders' equity due to (from) TWC and subsidiaries	0					0				0
Other TWC shareholders' equity	6,662					6,662				7,279
Total TWC shareholders' equity	6,662					6,662				7,279
Noncontrolling interests	4					4				4
Total equity	6,666		7,617			6,666		7,617		7,283	7,537
Total liabilities and equity	47,431					47,431				49,809
Condensed Consolidating Statement of Operations
Revenue	5,518		5,363			16,543		15,901
Cost of revenue	2,564	[1]	2,499	[1]		7,764	[1]	7,377	[1]
Selling, general and administrative	949	[1]	918	[1]		2,825	[1]	2,694	[1]
Depreciation	790		789			2,371		2,377
Amortization	32		31			95		79
Merger-related and restructuring costs	23		32			81		98
Total costs and expenses	4,358		4,269			13,136		12,625
Operating Income	1,160		1,094			3,407		3,276
Equity in pretax income of consolidated subsidiaries	0		0			0		0
Interest expense, net	(379)		(402)			(1,175)		(1,204)
Other income, net	0		496			10		493
Income before income taxes	781		1,188			2,242		2,565
Income tax provision	(249)		(379)			(828)		(920)
Net income	532		809			1,414		1,645
Less: Net income attributable to noncontrolling interests	0		(1)			0		(3)
Net income attributable to TWC shareholders	532		808			1,414		1,642
Condensed Consolidating Statement of Comprehensive Income
Net income	532		809			1,414		1,645
Change in accumulated unrealized losses on pension benefit obligation, net of tax	10		7			56		9
Change in accumulated deferred gains (losses) on cash flow hedges, net of tax	77		46			91		9
Other comprehensive income	87		53			147		18
Comprehensive income	619		862			1,561		1,663
Less: Comprehensive income attributable to noncontrolling interests	0		(1)			0		(3)
Comprehensive income attributable to TWC shareholders	619		861			1,561		1,660
Condensed Consolidating Statement of Cash Flows
Cash provided by operating activities						4,154		4,115
Capital expenditures						(2,371)		(2,191)
Business acquisitions, net of cash acquired						0		(1,340)
Purchases of investments						(586)		(57)
Return of capital from investees						7		1,112
Proceeds from sale, maturity and collection of investments						476		0
Acquisition of intangible assets						(30)		(27)
Investments in (distributions and sale proceeds from) consolidated subsidiaries								0
Other investing activities						19		21
Cash used by investing activities						(2,485)		(2,482)
Short-term repayments, net								0
Proceeds from issuance of long-term debt						0		2,258
Repayments of long-term debt						(1,500)		(1,750)
Repayments of long-term debt assumed in acquisitions						0		(1,730)
Debt issuance costs						0		(25)
Redemption of mandatorily redeemable preferred equity					(300)	(300)		0
Repurchases of common stock						(1,856)		(1,287)
Dividends paid						(573)		(529)
Proceeds from exercise of stock options						124		124
Excess tax benefit from equity-based compensation						81		73
Taxes paid in cash in lieu of shares issued for equity-based compensation						(64)		(43)
Net change in investments in and amounts due to and from consolidated subsidiaries						0		0
Other financing activities						(9)		(48)
Cash used by financing activities						(4,097)		(2,957)
Decrease in cash and equivalents						(2,428)		(1,324)
Cash and equivalents at beginning of year					3,304	3,304		5,177
Cash and equivalents at end of year	876		3,853			876		3,853
Eliminations [Member]
Condensed Consolidating Balance Sheet
Cash and equivalents	0		0			0		0
Short-term investments in U.S. Treasury securities	0					0				0
Receivables, net	0					0				0
Receivables from affiliated parties	(156)					(156)				(64)
Deferred income tax assets	0					0				0
Other current assets	0					0				0
Total current assets	(156)					(156)				(64)
Investments in and amounts due from consolidated subsidiaries	(81,619)					(81,619)				(78,920)
Investments	0					0				0
Property, plant and equipment, net	0					0				0
Intangible assets subject to amortization, net	0					0				0
Intangible assets not subject to amortization	0					0				0
Goodwill	0					0				0
Other assets	0					0				(71)
Total assets	(81,775)					(81,775)				(79,055)
Accounts payable	0					0				0
Deferred revenue and subscriber-related liabilities	0					0				0
Payables to affiliated parties	(156)					(156)				(64)
Accrued programming expense	0					0				0
Current maturities of long-term debt	0					0				0
Mandatorily redeemable preferred equity issued by a subsidiary										0
Other current liabilities	0					0				0
Total current liabilities	(156)					(156)				(64)
Long-term debt	0					0				0
Deferred income tax liabilities, net	0					0				(71)
Long-term payables to affiliated parties	(16,343)					(16,343)				(16,343)
Other liabilities	0					0				0
Shareholders' equity due to (from) TWC and subsidiaries	0					0				0
Other TWC shareholders' equity	(65,276)					(65,276)				(62,577)
Total TWC shareholders' equity	(65,276)					(65,276)				(62,577)
Noncontrolling interests	0					0				0
Total equity	(65,276)					(65,276)				(62,577)
Total liabilities and equity	(81,775)					(81,775)				(79,055)
Condensed Consolidating Statement of Operations
Revenue	0		0			0		0
Cost of revenue	0		0			0		0
Selling, general and administrative	0		0			0		0
Depreciation	0		0			0		0
Amortization	0		0			0		0
Merger-related and restructuring costs	0		0			0		0
Total costs and expenses	0		0			0		0
Operating Income	0		0			0		0
Equity in pretax income of consolidated subsidiaries	(1,595)		(2,290)			(4,711)		(5,451)
Interest expense, net	0		0			0		0
Other income, net	0		0			0		0
Income before income taxes	(1,595)		(2,290)			(4,711)		(5,451)
Income tax provision	497		738			1,651		1,920
Net income	(1,098)		(1,552)			(3,060)		(3,531)
Less: Net income attributable to noncontrolling interests	0		0			0		0
Net income attributable to TWC shareholders	(1,098)		(1,552)			(3,060)		(3,531)
Condensed Consolidating Statement of Comprehensive Income
Net income	(1,098)		(1,552)			(3,060)		(3,531)
Change in accumulated unrealized losses on pension benefit obligation, net of tax	0		0			0		0
Change in accumulated deferred gains (losses) on cash flow hedges, net of tax	0		0			0		0
Other comprehensive income	0		0			0		0
Comprehensive income	(1,098)		(1,552)			(3,060)		(3,531)
Less: Comprehensive income attributable to noncontrolling interests	0		0			0		0
Comprehensive income attributable to TWC shareholders	(1,098)		(1,552)			(3,060)		(3,531)
Condensed Consolidating Statement of Cash Flows
Cash provided by operating activities						0		0
Capital expenditures						0		0
Business acquisitions, net of cash acquired								0
Purchases of investments						0		0
Return of capital from investees						0		0
Proceeds from sale, maturity and collection of investments						0
Acquisition of intangible assets						0		0
Investments in (distributions and sale proceeds from) consolidated subsidiaries								363
Other investing activities						0		0
Cash used by investing activities						0		363
Short-term repayments, net								(363)
Proceeds from issuance of long-term debt								0
Repayments of long-term debt						0		0
Repayments of long-term debt assumed in acquisitions								0
Debt issuance costs								0
Redemption of mandatorily redeemable preferred equity						0
Repurchases of common stock						0		0
Dividends paid						0		0
Proceeds from exercise of stock options						0		0
Excess tax benefit from equity-based compensation						0		0
Taxes paid in cash in lieu of shares issued for equity-based compensation						0		0
Net change in investments in and amounts due to and from consolidated subsidiaries						0		0
Other financing activities						0		0
Cash used by financing activities						0		(363)
Decrease in cash and equivalents						0		0
Cash and equivalents at beginning of year					0	0		0
Cash and equivalents at end of year	0		0			0		0
Parent Company [Member]
Condensed Consolidating Balance Sheet
Cash and equivalents	656		2,795			656		2,795
Short-term investments in U.S. Treasury securities	250					250				150
Receivables, net	45					45				49
Receivables from affiliated parties	128					128				35
Deferred income tax assets	4					4				5
Other current assets	133					133				54
Total current assets	1,216					1,216				2,467
Investments in and amounts due from consolidated subsidiaries	41,913					41,913				40,656
Investments	16					16				17
Property, plant and equipment, net	0					0				0
Intangible assets subject to amortization, net	0					0				0
Intangible assets not subject to amortization	0					0				0
Goodwill	0					0				0
Other assets	510					510				580
Total assets	43,655					43,655				43,720
Accounts payable	0					0				1
Deferred revenue and subscriber-related liabilities	0					0				0
Payables to affiliated parties	28					28				29
Accrued programming expense	0					0				0
Current maturities of long-term debt	1,769					1,769				1,516
Mandatorily redeemable preferred equity issued by a subsidiary										0
Other current liabilities	476					476				631
Total current liabilities	2,273					2,273				2,177
Long-term debt	21,168					21,168				23,078
Deferred income tax liabilities, net	40					40				0
Long-term payables to affiliated parties	7,641					7,641				7,641
Other liabilities	345					345				275
Shareholders' equity due to (from) TWC and subsidiaries	5,526					5,526				3,270
Other TWC shareholders' equity	6,662					6,662				7,279
Total TWC shareholders' equity	12,188					12,188				10,549
Noncontrolling interests	0					0				0
Total equity	12,188					12,188				10,549
Total liabilities and equity	43,655					43,655				43,720
Condensed Consolidating Statement of Operations
Revenue	0		0			0		0
Cost of revenue	0		0			0		0
Selling, general and administrative	0		0			0		0
Depreciation	0		0			0		0
Amortization	0		0			0		0
Merger-related and restructuring costs	0		2			0		24
Total costs and expenses	0		2			0		24
Operating Income	0		(2)			0		(24)
Equity in pretax income of consolidated subsidiaries	834		1,255			2,424		2,814
Interest expense, net	(53)		(67)			(183)		(230)
Other income, net	0		1			1		1
Income before income taxes	781		1,187			2,242		2,561
Income tax provision	(249)		(379)			(828)		(919)
Net income	532		808			1,414		1,642
Less: Net income attributable to noncontrolling interests	0		0			0		0
Net income attributable to TWC shareholders	532		808			1,414		1,642
Condensed Consolidating Statement of Comprehensive Income
Net income	532		808			1,414		1,642
Change in accumulated unrealized losses on pension benefit obligation, net of tax	10		7			56		9
Change in accumulated deferred gains (losses) on cash flow hedges, net of tax	77		46			91		9
Other comprehensive income	87		53			147		18
Comprehensive income	619		861			1,561		1,660
Less: Comprehensive income attributable to noncontrolling interests	0		0			0		0
Comprehensive income attributable to TWC shareholders	619		861			1,561		1,660
Condensed Consolidating Statement of Cash Flows
Cash provided by operating activities						(239)		41
Capital expenditures						0		0
Business acquisitions, net of cash acquired								(1,350)
Purchases of investments						(575)		0
Return of capital from investees						0		0
Proceeds from sale, maturity and collection of investments						476
Acquisition of intangible assets						0		(3)
Investments in (distributions and sale proceeds from) consolidated subsidiaries								0
Other investing activities						0		0
Cash used by investing activities						(99)		(1,353)
Short-term repayments, net								363
Proceeds from issuance of long-term debt								2,258
Repayments of long-term debt						(1,500)		(1,500)
Repayments of long-term debt assumed in acquisitions								0
Debt issuance costs								(25)
Redemption of mandatorily redeemable preferred equity						0
Repurchases of common stock						(1,856)		(1,287)
Dividends paid						(573)		(529)
Proceeds from exercise of stock options						124		124
Excess tax benefit from equity-based compensation						81		55
Taxes paid in cash in lieu of shares issued for equity-based compensation						0		0
Net change in investments in and amounts due to and from consolidated subsidiaries						2,552		292
Other financing activities						(8)		(16)
Cash used by financing activities						(1,180)		(265)
Decrease in cash and equivalents						(1,518)		(1,577)
Cash and equivalents at beginning of year					2,174	2,174		4,372
Cash and equivalents at end of year	656		2,795			656		2,795
Guarantor Subsidiaries [Member]
Condensed Consolidating Balance Sheet
Cash and equivalents	0		0			0		0
Short-term investments in U.S. Treasury securities	0					0				0
Receivables, net	0					0				0
Receivables from affiliated parties	0					0				0
Deferred income tax assets	7					7				4
Other current assets	15					15				0
Total current assets	22					22				4
Investments in and amounts due from consolidated subsidiaries	33,488					33,488				32,103
Investments	54					54				58
Property, plant and equipment, net	31					31				33
Intangible assets subject to amortization, net	7					7				10
Intangible assets not subject to amortization	0					0				0
Goodwill	0					0				0
Other assets	0					0				0
Total assets	33,602					33,602				32,208
Accounts payable	0					0				0
Deferred revenue and subscriber-related liabilities	0					0				0
Payables to affiliated parties	0					0				0
Accrued programming expense	0					0				0
Current maturities of long-term debt	0					0				0
Mandatorily redeemable preferred equity issued by a subsidiary										0
Other current liabilities	66					66				61
Total current liabilities	66					66				61
Long-term debt	2,066					2,066				2,070
Deferred income tax liabilities, net	325					325				267
Long-term payables to affiliated parties	0					0				0
Other liabilities	1					1				3
Shareholders' equity due to (from) TWC and subsidiaries	(11)					(11)				120
Other TWC shareholders' equity	31,155					31,155				29,687
Total TWC shareholders' equity	31,144					31,144				29,807
Noncontrolling interests	0					0				0
Total equity	31,144					31,144				29,807
Total liabilities and equity	33,602					33,602				32,208
Condensed Consolidating Statement of Operations
Revenue	0		0			0		0
Cost of revenue	0		0			0		0
Selling, general and administrative	0		0			0		0
Depreciation	0		0			0		0
Amortization	0		0			0		0
Merger-related and restructuring costs	0		0			0		0
Total costs and expenses	0		0			0		0
Operating Income	0		0			0		0
Equity in pretax income of consolidated subsidiaries	763		803			2,288		2,474
Interest expense, net	(1)		(46)			(2)		(145)
Other income, net	(2)		432			1		417
Income before income taxes	760		1,189			2,287		2,746
Income tax provision	(252)		(431)			(854)		(1,043)
Net income	508		758			1,433		1,703
Less: Net income attributable to noncontrolling interests	0		0			0		0
Net income attributable to TWC shareholders	508		758			1,433		1,703
Condensed Consolidating Statement of Comprehensive Income
Net income	508		758			1,433		1,703
Change in accumulated unrealized losses on pension benefit obligation, net of tax	0		0			0		0
Change in accumulated deferred gains (losses) on cash flow hedges, net of tax	0		0			0		0
Other comprehensive income	0		0			0		0
Comprehensive income	508		758			1,433		1,703
Less: Comprehensive income attributable to noncontrolling interests	0		0			0		0
Comprehensive income attributable to TWC shareholders	508		758			1,433		1,703
Condensed Consolidating Statement of Cash Flows
Cash provided by operating activities						(361)		(661)
Capital expenditures						0		0
Business acquisitions, net of cash acquired								0
Purchases of investments						(11)		(16)
Return of capital from investees						7		1,112
Proceeds from sale, maturity and collection of investments						0
Acquisition of intangible assets						(3)		0
Investments in (distributions and sale proceeds from) consolidated subsidiaries								0
Other investing activities						0		0
Cash used by investing activities						(7)		1,096
Short-term repayments, net								0
Proceeds from issuance of long-term debt								0
Repayments of long-term debt						0		(250)
Repayments of long-term debt assumed in acquisitions								0
Debt issuance costs								0
Redemption of mandatorily redeemable preferred equity						0
Repurchases of common stock						0		0
Dividends paid						0		0
Proceeds from exercise of stock options						0		0
Excess tax benefit from equity-based compensation						0		0
Taxes paid in cash in lieu of shares issued for equity-based compensation						0		0
Net change in investments in and amounts due to and from consolidated subsidiaries						368		(185)
Other financing activities						0		0
Cash used by financing activities						368		(435)
Decrease in cash and equivalents						0		0
Cash and equivalents at beginning of year					0	0		0
Cash and equivalents at end of year	0		0			0		0
Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Balance Sheet
Cash and equivalents	220		1,058			220		1,058
Short-term investments in U.S. Treasury securities	0					0				0
Receivables, net	847					847				834
Receivables from affiliated parties	28					28				29
Deferred income tax assets	298					298				308
Other current assets	181					181				169
Total current assets	1,574					1,574				2,470
Investments in and amounts due from consolidated subsidiaries	6,218					6,218				6,161
Investments	13					13				12
Property, plant and equipment, net	14,596					14,596				14,709
Intangible assets subject to amortization, net	566					566				631
Intangible assets not subject to amortization	26,012					26,012				26,011
Goodwill	2,886					2,886				2,889
Other assets	84					84				53
Total assets	51,949					51,949				52,936
Accounts payable	468					468				646
Deferred revenue and subscriber-related liabilities	192					192				183
Payables to affiliated parties	128					128				35
Accrued programming expense	897					897				872
Current maturities of long-term debt	2					2				2
Mandatorily redeemable preferred equity issued by a subsidiary										300
Other current liabilities	1,094					1,094				1,113
Total current liabilities	2,781					2,781				3,151
Long-term debt	27					27				23
Deferred income tax liabilities, net	11,349					11,349				11,084
Long-term payables to affiliated parties	8,702					8,702				8,702
Other liabilities	480					480				472
Shareholders' equity due to (from) TWC and subsidiaries	(5,515)					(5,515)				(3,390)
Other TWC shareholders' equity	34,121					34,121				32,890
Total TWC shareholders' equity	28,606					28,606				29,500
Noncontrolling interests	4					4				4
Total equity	28,610					28,610				29,504
Total liabilities and equity	51,949					51,949				52,936
Condensed Consolidating Statement of Operations
Revenue	5,518		5,363			16,543		15,901
Cost of revenue	2,564		2,499			7,764		7,377
Selling, general and administrative	949		918			2,825		2,694
Depreciation	790		789			2,371		2,377
Amortization	32		31			95		79
Merger-related and restructuring costs	23		30			81		74
Total costs and expenses	4,358		4,267			13,136		12,601
Operating Income	1,160		1,096			3,407		3,300
Equity in pretax income of consolidated subsidiaries	(2)		232			(1)		163
Interest expense, net	(325)		(289)			(990)		(829)
Other income, net	2		63			8		75
Income before income taxes	835		1,102			2,424		2,709
Income tax provision	(245)		(307)			(797)		(878)
Net income	590		795			1,627		1,831
Less: Net income attributable to noncontrolling interests	0		(1)			0		(3)
Net income attributable to TWC shareholders	590		794			1,627		1,828
Condensed Consolidating Statement of Comprehensive Income
Net income	590		795			1,627		1,831
Change in accumulated unrealized losses on pension benefit obligation, net of tax	0		0			0		0
Change in accumulated deferred gains (losses) on cash flow hedges, net of tax	0		0			0		0
Other comprehensive income	0		0			0		0
Comprehensive income	590		795			1,627		1,831
Less: Comprehensive income attributable to noncontrolling interests	0		(1)			0		(3)
Comprehensive income attributable to TWC shareholders	590		794			1,627		1,828
Condensed Consolidating Statement of Cash Flows
Cash provided by operating activities						4,754		4,735
Capital expenditures						(2,371)		(2,191)
Business acquisitions, net of cash acquired								10
Purchases of investments						0		(41)
Return of capital from investees						0		0
Proceeds from sale, maturity and collection of investments						0
Acquisition of intangible assets						(27)		(24)
Investments in (distributions and sale proceeds from) consolidated subsidiaries								(363)
Other investing activities						19		21
Cash used by investing activities						(2,379)		(2,588)
Short-term repayments, net								0
Proceeds from issuance of long-term debt								0
Repayments of long-term debt						0		0
Repayments of long-term debt assumed in acquisitions								(1,730)
Debt issuance costs								0
Redemption of mandatorily redeemable preferred equity						(300)
Repurchases of common stock						0		0
Dividends paid						0		0
Proceeds from exercise of stock options						0		0
Excess tax benefit from equity-based compensation						0		18
Taxes paid in cash in lieu of shares issued for equity-based compensation						(64)		(43)
Net change in investments in and amounts due to and from consolidated subsidiaries						(2,920)		(107)
Other financing activities						(1)		(32)
Cash used by financing activities						(3,285)		(1,894)
Decrease in cash and equivalents						(910)		253
Cash and equivalents at beginning of year					1,130	1,130		805
Cash and equivalents at end of year	$ 220		$ 1,058			$ 220		$ 1,058

[1] Cost of revenue and selling, general and administrative expenses exclude depreciation.