FV Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Aug. 02, 2013	Feb. 01, 2013	Aug. 03, 2012
Short-term Investments [Member]
Fair Value Disclosures
Fair value	$ 189	$ 125	$ 586
Short-term Investments [Member] | Available-for-sale Securities [Member] | Money Market Funds [Member]
Fair Value Disclosures
Fair value	105	49	61
Short-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Obligations [Member]
Fair Value Disclosures
Fair value	46	56	56
Short-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Floating Rate Obligations [Member]
Fair Value Disclosures
Fair value	17	14	433
Short-term Investments [Member] | Available-for-sale Securities [Member] | Certificates Of Deposit [Member]
Fair Value Disclosures
Fair value	21		2
Short-term Investments [Member] | Available-for-sale Securities [Member] | Other [Member]
Fair Value Disclosures
Fair value		6	6
Short-term Investments [Member] | Trading Securities [Member] | Mutual Funds [Member]
Fair Value Disclosures
Fair value			28
Long-term Investments [Member]
Fair Value Disclosures
Fair value	306	271	485
Long-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Obligations [Member]
Fair Value Disclosures
Fair value	18	41	80
Long-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Floating Rate Obligations [Member]
Fair Value Disclosures
Fair value	288	230	394
Long-term Investments [Member] | Available-for-sale Securities [Member] | Equity Securities [Member]
Fair Value Disclosures
Fair value			11
Fair Value (Level 1) [Member] | Short-term Investments [Member]
Fair Value Disclosures
Fair value	126	49	97
Fair Value (Level 1) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Money Market Funds [Member]
Fair Value Disclosures
Fair value	105	49	61
Fair Value (Level 1) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Obligations [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 1) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Floating Rate Obligations [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 1) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Certificates Of Deposit [Member]
Fair Value Disclosures
Fair value	21		2
Fair Value (Level 1) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Other [Member]
Fair Value Disclosures
Fair value		0	6
Fair Value (Level 1) [Member] | Short-term Investments [Member] | Trading Securities [Member] | Mutual Funds [Member]
Fair Value Disclosures
Fair value			28
Fair Value (Level 1) [Member] | Long-term Investments [Member]
Fair Value Disclosures
Fair value	0	0	11
Fair Value (Level 1) [Member] | Long-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Obligations [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 1) [Member] | Long-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Floating Rate Obligations [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 1) [Member] | Long-term Investments [Member] | Available-for-sale Securities [Member] | Equity Securities [Member]
Fair Value Disclosures
Fair value			11
Fair Value (Level 2) [Member] | Short-term Investments [Member]
Fair Value Disclosures
Fair value	63	76	489
Fair Value (Level 2) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Money Market Funds [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 2) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Obligations [Member]
Fair Value Disclosures
Fair value	46	56	56
Fair Value (Level 2) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Floating Rate Obligations [Member]
Fair Value Disclosures
Fair value	17	14	433
Fair Value (Level 2) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Certificates Of Deposit [Member]
Fair Value Disclosures
Fair value	0		0
Fair Value (Level 2) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Other [Member]
Fair Value Disclosures
Fair value		6	0
Fair Value (Level 2) [Member] | Short-term Investments [Member] | Trading Securities [Member] | Mutual Funds [Member]
Fair Value Disclosures
Fair value			0
Fair Value (Level 2) [Member] | Long-term Investments [Member]
Fair Value Disclosures
Fair value	306	271	474
Fair Value (Level 2) [Member] | Long-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Obligations [Member]
Fair Value Disclosures
Fair value	18	41	80
Fair Value (Level 2) [Member] | Long-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Floating Rate Obligations [Member]
Fair Value Disclosures
Fair value	288	230	394
Fair Value (Level 2) [Member] | Long-term Investments [Member] | Available-for-sale Securities [Member] | Equity Securities [Member]
Fair Value Disclosures
Fair value			0
Fair Value (Level 3) [Member] | Short-term Investments [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 3) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Money Market Funds [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 3) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Obligations [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 3) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Floating Rate Obligations [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 3) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Certificates Of Deposit [Member]
Fair Value Disclosures
Fair value	0		0
Fair Value (Level 3) [Member] | Short-term Investments [Member] | Available-for-sale Securities [Member] | Other [Member]
Fair Value Disclosures
Fair value		0	0
Fair Value (Level 3) [Member] | Short-term Investments [Member] | Trading Securities [Member] | Mutual Funds [Member]
Fair Value Disclosures
Fair value			0
Fair Value (Level 3) [Member] | Long-term Investments [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 3) [Member] | Long-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Obligations [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 3) [Member] | Long-term Investments [Member] | Available-for-sale Securities [Member] | Municipal Floating Rate Obligations [Member]
Fair Value Disclosures
Fair value	0	0	0
Fair Value (Level 3) [Member] | Long-term Investments [Member] | Available-for-sale Securities [Member] | Equity Securities [Member]
Fair Value Disclosures
Fair value			$ 0