Financial Statements of Guarantors (Details 3) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2012 QCII	Dec. 31, 2011 QCII	Dec. 31, 2012 QSC and QCF	Dec. 31, 2011 QSC and QCF	Apr. 02, 2011 QSC and QCF	Dec. 31, 2012 Subsidiaries Non-Guarantors	Dec. 31, 2011 Subsidiaries Non-Guarantors	Apr. 02, 2011 Subsidiaries Non-Guarantors	Dec. 31, 2012 Eliminations	Dec. 31, 2011 Eliminations
CURRENT ASSETS
Cash and cash equivalents	$ 87	$ 48	$ 424	$ 11		$ 59	$ 40	$ 183	$ 17	$ 8	$ 241
Accounts receivable, less allowance	1,177	1,201		10	15		2		1,167	1,184
Advances to affiliates	500	742			184	938	1,694		223	400		(661)	(1,536)
Notes receivable affiliates						1,413						(1,413)
Accounts receivable-affiliates, net					211		336			36			(583)
Deferred income taxes, net	473	559				272	438		201	121
Other	320	265		8			19		321	259		(9)	(13)
Total current assets	2,557	2,815		29	410	2,682	2,529		1,929	2,008		(2,083)	(2,132)
Net property, plant and equipment	9,127	9,461							9,127	9,461
Goodwill	10,123	10,123							10,123	10,123
Customer relationships, net	5,822	6,788							5,822	6,788
Other intangible assets, net	1,277	1,587		64	126				1,213	1,461
Investments in subsidiaries				14,322	14,856	13,478	13,999					(27,800)	(28,855)
Deferred income taxes, net				1,336	1,102	931	1,390			117		(2,267)	(2,609)
Prepaid pension, post-retirement and other post-employment benefits-affiliate	4			1,697	2,851		76			955		(1,693)	(3,882)
Other	336	381		37	36	7	7		292	338
TOTAL ASSETS	29,246	31,155		17,485	19,381	17,098	18,001		28,506	31,251		(33,843)	(37,478)
CURRENT LIABILITIES
Current maturities of long-term debt	856	117							856	117
Current debt-affiliates	2,023			1,322	122	1,413	1,413		701			(1,413)	(1,535)
Accounts payable	687	973			4	1	19		695	950		(9)
Accounts payable-affiliates		394		661	360		42			23		(661)	(31)
Dividends payable - affiliates		200			200					310			(310)
Accrued expenses and other liabilities	924	1,011		178	272	57	40		689	700			(1)
Accrued expenses and other-affiliates					1		62			192			(255)
Advance billings and customers deposits	452	400							452	400
Total current liabilities	4,942	3,095		2,161	959	1,471	1,576		3,393	2,692		(2,083)	(2,132)
LONG-TERM DEBT	8,772	12,179		849	2,767	1,008	1,009		6,915	8,403
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred revenues	192	110							192	110
Benefit plan obligations, net	3,699	3,198		3,699	3,198
Pension, post-retirement and other post-employment benefits obligations and other-affiliates					1,031		344			2,507			(3,882)
Deferred income taxes	494	630					223		2,761	3,016		(2,267)	(2,609)
Other	523	667		152	150	27	31		344	486
Other - affiliates						270			1,423			(1,693)
Total deferred credits and other liabilities	4,908	4,605		3,851	4,379	297	598		4,720	6,119		(3,960)	(6,491)
STOCKHOLDER'S EQUITY	10,624	11,276		10,624	11,276	14,322	14,818		13,478	14,037		(27,800)	(28,855)
TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY	$ 29,246	$ 31,155		$ 17,485	$ 19,381	$ 17,098	$ 18,001		$ 28,506	$ 31,251		$ (33,843)	$ (37,478)