Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Oct. 29, 2011	Oct. 30, 2010
Net income (loss)	$ 511	$ 180
Equity in earnings of subsidiaries	0	0
Dividends received from subsidiaries	0	0
Depreciation and amortization	818	865
(Increase) decrease in working capital	(718)	(467)
Other, net	16	(232)
Net cash provided by operating activities	627	346
Purchase of property and equipment and capitalized software, net	(472)	(236)
Other, net	0	(49)
Net cash used by investing activities	(472)	(285)
Debt repaid	(451)	(1,090)
Dividends paid	(106)	(63)
Acquisition of common stock, net of common stock issued	(97)	29
Intercompany activity, net	0	0
Other, net	132	92
Net cash used by financing activities	(522)	(1,032)
Net decrease in cash and cash equivalents	(367)	(971)
Cash and cash equivalents at beginning of period	1,464	1,686
Cash and cash equivalents at end of period	1,097	715
Parent [Member]
Net income (loss)	511	180
Equity in earnings of subsidiaries	(506)	(184)
Dividends received from subsidiaries	352	289
Depreciation and amortization	0	0
(Increase) decrease in working capital	(73)	(86)
Other, net	1	8
Net cash provided by operating activities	285	207
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	(106)	(63)
Acquisition of common stock, net of common stock issued	(97)	29
Intercompany activity, net	(488)	(1,182)
Other, net	11	118
Net cash used by financing activities	(680)	(1,098)
Net decrease in cash and cash equivalents	(395)	(891)
Cash and cash equivalents at beginning of period	1,174	1,318
Cash and cash equivalents at end of period	779	427
Subsidiary Issuer [Member]
Net income (loss)	(123)	(296)
Equity in earnings of subsidiaries	(175)	(92)
Dividends received from subsidiaries	0	0
Depreciation and amortization	390	427
(Increase) decrease in working capital	(213)	(474)
Other, net	23	(379)
Net cash provided by operating activities	(98)	(814)
Purchase of property and equipment and capitalized software, net	(194)	(51)
Other, net	38	0
Net cash used by investing activities	(156)	(51)
Debt repaid	(449)	(1,088)
Dividends paid	0	0
Acquisition of common stock, net of common stock issued	0	0
Intercompany activity, net	705	1,945
Other, net	(9)	(16)
Net cash used by financing activities	247	841
Net decrease in cash and cash equivalents	(7)	(24)
Cash and cash equivalents at beginning of period	41	60
Cash and cash equivalents at end of period	34	36
Other Subsidiaries [Member]
Net income (loss)	804	572
Equity in earnings of subsidiaries	0	0
Dividends received from subsidiaries	0	0
Depreciation and amortization	428	438
(Increase) decrease in working capital	(432)	93
Other, net	(8)	139
Net cash provided by operating activities	792	1,242
Purchase of property and equipment and capitalized software, net	(278)	(185)
Other, net	(38)	(49)
Net cash used by investing activities	(316)	(234)
Debt repaid	(2)	(2)
Dividends paid	(352)	(289)
Acquisition of common stock, net of common stock issued	0	0
Intercompany activity, net	(217)	(763)
Other, net	130	(10)
Net cash used by financing activities	(441)	(1,064)
Net decrease in cash and cash equivalents	35	(56)
Cash and cash equivalents at beginning of period	249	308
Cash and cash equivalents at end of period	284	252
Consolidating Adjustments [Member]
Net income (loss)	(681)	(276)
Equity in earnings of subsidiaries	681	276
Dividends received from subsidiaries	(352)	(289)
Depreciation and amortization	0	0
(Increase) decrease in working capital	0	0
Other, net	0	0
Net cash provided by operating activities	(352)	(289)
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	352	289
Acquisition of common stock, net of common stock issued	0	0
Intercompany activity, net	0	0
Other, net	0	0
Net cash used by financing activities	352	289
Net 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