Condensed Consolidating Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 28, 2012	Apr. 30, 2011
Cash flows from operating activities:
Net income (loss)	$ 181	$ 131
Equity in earnings of subsidiaries	0	0
Dividends received from subsidiaries	0	0
Depreciation and amortization	256	268
(Increase) decrease in working capital	(189)	(190)
Other, net	17	(142)
Net cash provided (used) by operating activities	265	67
Cash flows from investing activities:
Purchase of property and equipment and capitalized software, net	(191)	(90)
Other, net	(11)	26
Net cash provided (used) by investing activities	(202)	(64)
Cash flows from financing activities:
Debt repaid	(795)	(335)
Dividends paid	(83)	(21)
(Common stock acquired) net of Issuance of common stock	(105)	31
Intercompany activity, net	0	0
Other, net	(16)	10
Net cash provided (used) by financing activities	(999)	(315)
Net increase (decrease) in cash and cash equivalents	(936)	(312)
Cash and cash equivalents beginning of period	2,827	1,464
Cash and cash equivalents end of period	1,891	1,152
Parent
Cash flows from operating activities:
Net income (loss)	181	131
Equity in earnings of subsidiaries	(183)	(132)
Dividends received from subsidiaries	188	100
Depreciation and amortization	0	0
(Increase) decrease in working capital	(104)	(33)
Other, net	2	(73)
Net cash provided (used) by operating activities	84	(7)
Cash flows from investing activities:
Purchase of property and equipment and capitalized software, net	0	0
Other, net	0	0
Net cash provided (used) by investing activities	0	0
Cash flows from financing activities:
Debt repaid	0	0
Dividends paid	(83)	(21)
(Common stock acquired) net of Issuance of common stock	(105)	31
Intercompany activity, net	(865)	(381)
Other, net	(44)	(43)
Net cash provided (used) by financing activities	(1,097)	(414)
Net increase (decrease) in cash and cash equivalents	(1,013)	(421)
Cash and cash equivalents beginning of period	2,533	1,174
Cash and cash equivalents end of period	1,520	753
Subsidiary Issuer
Cash flows from operating activities:
Net income (loss)	(25)	(53)
Equity in earnings of subsidiaries	(63)	(92)
Dividends received from subsidiaries	0	0
Depreciation and amortization	118	129
(Increase) decrease in working capital	85	76
Other, net	38	38
Net cash provided (used) by operating activities	153	98
Cash flows from investing activities:
Purchase of property and equipment and capitalized software, net	(23)	(16)
Other, net	0	37
Net cash provided (used) by investing activities	(23)	21
Cash flows from financing activities:
Debt repaid	(794)	(335)
Dividends paid	0	0
(Common stock acquired) net of Issuance of common stock	0	0
Intercompany activity, net	666	214
Other, net	(4)	(2)
Net cash provided (used) by financing activities	(132)	(123)
Net increase (decrease) in cash and cash equivalents	(2)	(4)
Cash and cash equivalents beginning of period	38	41
Cash and cash equivalents end of period	36	37
Other Subsidiaries
Cash flows from operating activities:
Net income (loss)	271	277
Equity in earnings of subsidiaries	0	0
Dividends received from subsidiaries	0	0
Depreciation and amortization	138	139
(Increase) decrease in working capital	(170)	(233)
Other, net	(23)	(107)
Net cash provided (used) by operating activities	216	76
Cash flows from investing activities:
Purchase of property and equipment and capitalized software, net	(168)	(74)
Other, net	(11)	(11)
Net cash provided (used) by investing activities	(179)	(85)
Cash flows from financing activities:
Debt repaid	(1)	0
Dividends paid	(188)	(100)
(Common stock acquired) net of Issuance of common stock	0	0
Intercompany activity, net	199	167
Other, net	32	55
Net cash provided (used) by financing activities	42	122
Net increase (decrease) in cash and cash equivalents	79	113
Cash and cash equivalents beginning of period	256	249
Cash and cash equivalents end of period	335	362
Consolidating Adjustments
Cash flows from operating activities:
Net income (loss)	(246)	(224)
Equity in earnings of subsidiaries	246	224
Dividends received from subsidiaries	(188)	(100)
Depreciation and amortization	0	0
(Increase) decrease in working capital	0	0
Other, net	0	0
Net cash provided (used) by operating activities	(188)	(100)
Cash flows from investing activities:
Purchase of property and equipment and capitalized software, net	0	0
Other, net	0	0
Net cash provided (used) by investing activities	0	0
Cash flows from financing activities:
Debt repaid	0	0
Dividends paid	188	100
(Common stock acquired) net of Issuance of common stock	0	0
Intercompany activity, net	0	0
Other, net	0	0
Net cash provided (used) by financing activities	188	100
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents beginning of period	0	0
Cash and cash equivalents end of period	$ 0	$ 0