Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Cash Flows) (Details) (USD $) In Millions	6 Months Ended
	Jul. 30, 2011	Jul. 31, 2010
Net income (loss)	$ 372	$ 170
Equity in earnings of subsidiaries	0	0
Dividends received from subsidiaries	0	0
Depreciation and amortization	536	575
(Increase) decrease in working capital	(227)	(148)
Other, net	(94)	(309)
Net cash provided by operating activities	587	288
Purchase of property and equipment and capitalized software, net	(240)	(125)
Other, net	18	1
Net cash used by investing activities	(222)	(124)
Debt repaid	(337)	(584)
Dividends paid	(64)	(42)
Issuance of common stock, net of common stock acquired	81	14
Intercompany activity, net	0	0
Other, net	(14)	(30)
Net cash used by financing activities	(334)	(642)
Net increase (decrease) in cash and cash equivalents	31	(478)
Cash and cash equivalents at beginning of period	1,464	1,686
Cash and cash equivalents at end of period	1,495	1,208
Parent [Member]
Net income (loss)	372	170
Equity in earnings of subsidiaries	(374)	(173)
Dividends received from subsidiaries	222	198
Depreciation and amortization	0	0
(Increase) decrease in working capital	(32)	(18)
Other, net	(13)	(4)
Net cash provided by operating activities	175	173
Purchase of property and equipment and capitalized software, net	0	0
Other, net	0	0
Net cash used by investing activities	0	0
Debt repaid	0	0
Dividends paid	(64)	(42)
Issuance of common stock, net of common stock acquired	81	14
Intercompany activity, net	(153)	(526)
Other, net	(31)	(38)
Net cash used by financing activities	(167)	(592)
Net increase (decrease) in cash and cash equivalents	8	(419)
Cash and cash equivalents at beginning of period	1,174	1,318
Cash and cash equivalents at end of period	1,182	899
Subsidiary Issuer [Member]
Net income (loss)	42	(97)
Equity in earnings of subsidiaries	(154)	(85)
Dividends received from subsidiaries	0	0
Depreciation and amortization	257	285
(Increase) decrease in working capital	92	(278)
Other, net	(7)	(395)
Net cash provided by operating activities	230	(570)
Purchase of property and equipment and capitalized software, net	(81)	(33)
Other, net	38	0
Net cash used by investing activities	(43)	(33)
Debt repaid	(336)	(583)
Dividends paid	0	0
Issuance of common stock, net of common stock acquired	0	0
Intercompany activity, net	149	1,176
Other, net	(7)	(13)
Net cash used by financing activities	(194)	580
Net increase (decrease) in cash and cash equivalents	(7)	(23)
Cash and cash equivalents at beginning of period	41	60
Cash and cash equivalents at end of period	34	37
Other Subsidiaries [Member]
Net income (loss)	486	355
Equity in earnings of subsidiaries	0	0
Dividends received from subsidiaries	0	0
Depreciation and amortization	279	290
(Increase) decrease in working capital	(287)	148
Other, net	(74)	90
Net cash provided by operating activities	404	883
Purchase of property and equipment and capitalized software, net	(159)	(92)
Other, net	(20)	1
Net cash used by investing activities	(179)	(91)
Debt repaid	(1)	(1)
Dividends paid	(222)	(198)
Issuance of common stock, net of common stock acquired	0	0
Intercompany activity, net	4	(650)
Other, net	24	21
Net cash used by financing activities	(195)	(828)
Net increase (decrease) in cash and cash equivalents	30	(36)
Cash and cash equivalents at beginning of period	249	308
Cash and cash equivalents at end of period	279	272
Consolidating Adjustments [Member]
Net income (loss)	(528)	(258)
Equity in earnings of subsidiaries	528	258
Dividends received from subsidiaries	(222)	(198)
Depreciation and amortization	0	0
(Increase) decrease in working capital	0	0
Other, net	0	0
Net cash provided by operating activities	(222)	(198)
Purchase of property and equipment and capitalized software, net	0	0
Other, net	0	0
Net cash used by investing activities	0	0
Debt repaid	0	0
Dividends paid	222	198
Issuance of common stock, net of common stock acquired	0	0
Intercompany activity, net	0	0
Other, net	0	0
Net cash used by financing activities	222	198
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0