Financial Statements of Guarantors (Condensed Consolidating Statements of Income) (Details) (USD $) In Millions	3 Months Ended										6 Months Ended	3 Months Ended				6 Months Ended		3 Months Ended				6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 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]		Jun. 30, 2011 Successor [Member] Subsidiary Non-Guarantors [Member]	Jun. 30, 2011 Successor [Member] Eliminations [Member]	Jun. 30, 2010 Successor [Member] Eliminations [Member]	Mar. 31, 2011 Predecessor [Member]	Jun. 30, 2010 Predecessor [Member]	Jun. 30, 2010 Predecessor [Member]	Mar. 31, 2011 Predecessor [Member] Qwest Communications International Inc. [Member]		Jun. 30, 2010 Predecessor [Member] Qwest Communications International Inc. [Member]		Jun. 30, 2010 Predecessor [Member] Qwest Communications International Inc. [Member]		Mar. 31, 2011 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]		Jun. 30, 2010 Predecessor [Member] Qwest Services Corporation and Qwest Capital Funding, Inc. [Member]		Mar. 31, 2011 Predecessor [Member] Subsidiary Non-Guarantors [Member]	Jun. 30, 2010 Predecessor [Member] Subsidiary Non-Guarantors [Member]	Mar. 31, 2011 Predecessor [Member] Eliminations [Member]	Jun. 30, 2010 Predecessor [Member] Eliminations [Member]	Jun. 30, 2010 Predecessor [Member] Eliminations [Member]
Operating revenue:
Total operating revenues	$ 2,763					$ 2,763			$ 2,846	$ 2,930	$ 5,896													$ 2,846	$ 5,896		$ 2,930
Operating revenues-affiliates	6			3	[1],[2]	15	(12)											2	[1],[2]	(1)	[1],[2]	2	[1],[2]	9	8	(11)	1	(10)
Total operating revenues	2,769			3	[1],[2]	2,778	(12)		2,846	2,930	5,896							2	[1],[2]	(1)	[1],[2]	2	[1],[2]	2,855	5,904	(11)	2,931	(10)
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	1,141					1,141			1,178	1,240	2,487													1,178	2,487		1,240
Selling, general, and administrative	656	5	[3]	3	[1],[2]	648			556	633	1,239	3	[3]	35	[3]	39	[3]	2	[1],[2]	(2)	[1],[2]	1	[1],[2]	551	1,199		600
Operating expenses-affiliates	32					44	(12)																	11	10	(11)		(10)
Depreciation and amortization	823	43	[3]			780			533	548	1,093													533	1,093		548
Total operating expenses	2,652	48	[3]	3	[1],[2]	2,613	(12)		2,267	2,421	4,819	3	[3]	35	[3]	39	[3]	2	[1],[2]	(2)	[1],[2]	1	[1],[2]	2,273	4,789	(11)	2,388	(10)
OPERATING INCOME	117	(48)	[3]			165			579	509	1,077	(3)	[3]	(35)	[3]	(39)	[3]			1	[1],[2]	1	[1],[2]	582	1,115		543
OTHER INCOME (EXPENSE), NET
Interest expense	(150)	(44)	[3]	(18)	[1],[2]	(88)			(227)	(265)	(544)	(56)	[3]	(82)	[3]	(168)	[3]	(19)	[1],[2]	(22)	[1],[2]	(58)	[1],[2]	(152)	(318)		(161)
Interest expense-affiliates		(4)	[3]	(23)	[1],[2]	1	26	71				(1)	[3]					(26)	[1],[2]	(71)	[1],[2]	(155)	[1],[2]	(1)		28		155
Interest income-affiliates				26	[1],[2]		(26)	(71)										28	[1],[2]	71	[1],[2]	155	[1],[2]			(28)		(155)
Loss on early retirement of debt	(1)					(1)					(42)					(2)	[3]					(40)	[1],[2]
Income from equity investments in subsidiaries		67	[3]	(52)	[1],[2]		(15)	(424)				272	[3]	237	[3]	366	[3]	226	[1],[2]	187	[1],[2]	335	[1],[2]			(498)		(701)
Other (expense) income, net									5	22	22			21	[3]	21	[3]	(1)	[1],[2]	1	[1],[2]	1	[1],[2]	6
Total other (expense) income	(151)	19	[3]	(67)	[1],[2]	(88)	(15)	(424)	(222)	(243)	(564)	215	[3]	176	[3]	217	[3]	208	[1],[2]	166	[1],[2]	238	[1],[2]	(147)	(318)	(498)	(161)	(701)
(LOSS) INCOME BEFORE INCOME TAX EXPENSE	(34)	(29)	[3]	(67)	[1],[2]	77	(15)	(424)	357	266	513	212	[3]	141	[3]	178	[3]	208	[1],[2]	167	[1],[2]	239	[1],[2]	435	797	(498)	382	(701)
Income tax expense (benefit)	(8)	(3)	[3]	(131)	[1],[2]	126			146	108	317	1	[3]	(17)	[3]	(18)	[3]	(64)	[1],[2]	(74)	[1],[2]	(131)	[1],[2]	209	466		199
NET (LOSS) INCOME	$ (26)	$ (26)	[3]	$ 64	[1],[2]	$ (49)	$ (15)	$ (424)	$ 211	$ 158	$ 196	$ 211	[3]	$ 158	[3]	$ 196	[3]	$ 272	[1],[2]	$ 241	[1],[2]	$ 370	[1],[2]	$ 226	$ 331	$ (498)	$ 183	$ (701)

[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.