Financial Statements of Guarantors (Condensed Consolidating Balance Sheets) (Details) (USD $) In Millions	Jun. 30, 2011 Successor [Member]	Mar. 31, 2011 Successor [Member]	Jun. 30, 2011 Successor [Member] Qwest Communications International Inc. [Member]		Jun. 30, 2011 Successor [Member] Qwest Services Corporation and Qwest Capital Funding, Inc. [Member]		Mar. 31, 2011 Successor [Member] Qwest Services Corporation and Qwest Capital Funding, Inc. [Member]		Jun. 30, 2011 Successor [Member] Subsidiary Non-Guarantors [Member]	Mar. 31, 2011 Successor [Member] Subsidiary Non-Guarantors [Member]	Jun. 30, 2011 Successor [Member] Eliminations [Member]	Mar. 31, 2011 Predecessor [Member]	Dec. 31, 2010 Predecessor [Member]	Jun. 30, 2010 Predecessor [Member]	Dec. 31, 2009 Predecessor [Member]	Dec. 31, 2010 Predecessor [Member] Qwest Communications International Inc. [Member]		Jun. 30, 2010 Predecessor [Member] Qwest Communications International Inc. [Member]		Dec. 31, 2009 Predecessor [Member] Qwest Communications International Inc. [Member]		Mar. 31, 2011 Predecessor [Member] Qwest Services Corporation and Qwest Capital Funding, Inc. [Member]		Dec. 31, 2010 Predecessor [Member] Qwest Services Corporation and Qwest Capital Funding, Inc. [Member]		Jun. 30, 2010 Predecessor [Member] Qwest Services Corporation and Qwest Capital Funding, Inc. [Member]		Dec. 31, 2009 Predecessor [Member] Qwest Services Corporation and Qwest Capital Funding, Inc. [Member]		Mar. 31, 2011 Predecessor [Member] Subsidiary Non-Guarantors [Member]	Dec. 31, 2010 Predecessor [Member] Subsidiary Non-Guarantors [Member]	Jun. 30, 2010 Predecessor [Member] Subsidiary Non-Guarantors [Member]	Dec. 31, 2009 Predecessor [Member] Subsidiary Non-Guarantors [Member]	Dec. 31, 2010 Predecessor [Member] Eliminations [Member]
CURRENT ASSETS
Cash and cash equivalents	$ 47	$ 424			$ 33	[1],[2]	$ 183	[1],[2]	$ 14	$ 241		$ 424	$ 372	$ 1,118	$ 2,406			$ 33	[3]	$ 194	[3]	$ 183	[1],[2]	$ 148	[1],[2]	$ 762	[1],[2]	$ 987	[1],[2]	$ 241	$ 224	$ 323	$ 1,225
Accounts receivable, less allowance	1,187		15	[3]	25	[1],[2]			1,147				1,264			16	[3]							22	[1],[2]						1,226
Accounts receivable-affiliates, net	550		235	[3]	869	[1],[2]			375		(929)					296	[3]							277	[1],[2]						154			(727)
Notes receivable-affiliates					1,402	[1],[2]			100		(1,502)													1,568	[1],[2]						110			(1,678)
Deferred income tax asset	205		65	[3]	11	[1],[2]			168		(39)		234											36	[1],[2]						208			(10)
Other	234		5	[3]	4	[1],[2]			244		(19)		360			9	[3]							26	[1],[2]						353			(28)
Total current assets	2,223		320	[3]	2,344	[1],[2]			2,048		(2,489)		2,230			321	[3]							2,077	[1],[2]						2,275			(2,443)
Net property, plant and equipment	9,442								9,442				11,857																		11,857
Goodwill	10,005								10,005
Customer relationships, net	7,365								7,365
Other intangible assets, net	1,954		323	[3]					1,631				938			50	[3]														888
Investments in subsidiaries			15,324	[3]	13,888	[1],[2]					(29,212)					1,355	[3]							429	[1],[2]									(1,784)
Deferred income taxes, net			756	[3]	1,738	[1],[2]			11		(2,505)		1,686			840	[3]							2,045	[1],[2]						139			(1,338)
Prepaid pension, post-retirement and other post-employment benefits-affiliate			2,853	[3]	72	[1],[2]			922		(3,847)					2,848	[3]							71	[1],[2]						914			(3,833)
Other	298		37	[3]	8	[1],[2]			253				509			75	[3]							45	[1],[2]						389
TOTAL ASSETS	31,287		19,613	[3]	18,050	[1],[2]			31,677		(38,053)		17,220			5,489	[3]							4,667	[1],[2]						16,462			(9,398)
CURRENT LIABILITIES
Current maturities of long-term debt	1,600								1,600				1,089											179	[1],[2]						910
Current debt-affiliates			314	[3]	1,188	[1],[2]					(1,502)					118	[3]							1,560	[1],[2]									(1,678)
Accounts payable	918		5	[3]	5	[1],[2]			908				1,033			8	[3]							4	[1],[2]						1,021
Accounts payable-affiliates			46	[3]	2	[1],[2]			2		(50)					26	[3]							20	[1],[2]						186			(232)
Accrued expenses and other liabilities	1,088		300	[3]	32	[1],[2]			762		(6)		1,189			296	[3]							58	[1],[2]						842			(7)
Accrued expenses and other liabilities-affiliates			1	[3]	118	[1],[2]			760		(879)													175	[1],[2]						320			(495)
Deferred income taxes-net					39	[1],[2]					(39)					10	[3]																	(10)
Advance billings and customer deposits	365								378		(13)		551																		572			(21)
Total current liabilities	3,971		666	[3]	1,384	[1],[2]			4,410		(2,489)		3,862			458	[3]							1,996	[1],[2]						3,851			(2,443)
LONG-TERM DEBT	10,811		2,779	[3]	1,010	[1],[2]			7,022				10,858			2,598	[3]							978	[1],[2]						7,282
Deferred revenue	75								75				459																		459
Benefit plan obligation	2,820		2,820	[3]									2,979			2,979	[3]
Pension, post-retirement and other post-employment benefits obligations and other-affiliate			994	[3]	337	[1],[2]			2,516		(3,847)					985	[3]							356	[1],[2]						2,492			(3,833)
Deferred income taxes	578								3,083		(2,505)													11	[1],[2]						1,327			(1,338)
Other	813		135	[3]	29	[1],[2]			649				717			124	[3]							2	[1],[2]						591
Total deferred credits and other liabilities	4,286		3,949	[3]	366	[1],[2]			6,323		(6,352)		4,155			4,088	[3]							369	[1],[2]						4,869			(5,171)
Stockholders' (deficit) equity	12,219		12,219	[3]	15,290	[1],[2]			13,922		(29,212)	(1,560)	(1,655)	(1,241)		(1,655)	[3]							1,324	[1],[2]						460			(1,784)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)	$ 31,287		$ 19,613	[3]	$ 18,050	[1],[2]			$ 31,677		$ (38,053)		$ 17,220			$ 5,489	[3]							$ 4,667	[1],[2]						$ 16,462			$ (9,398)

[1] QCF is the issuer of the QCF Guaranteed Notes and is a guarantor of the QCII Guaranteed Notes.

[2] QSC is a guarantor of the QCII Guaranteed Notes.

[3] QCII is the issuer of the QCII Guaranteed Notes and is a guarantor of the QCF Guaranteed Notes.