Fair Value Measurements (Fair Value Measurement Of Assets And Liabilities) (Details) - Measured On Recurring Basis [Member] - USD ($)
$ in Millions |
Jan. 31, 2016 |
Aug. 02, 2015 |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
|
$ 66
|
$ 54
|
| Total liabilities at fair value |
|
166
|
140
|
| Fair Value, Inputs, Level 1 [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
|
1
|
1
|
| Total liabilities at fair value |
|
136
|
130
|
| Fair Value, Inputs, Level 2 [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
|
65
|
53
|
| Total liabilities at fair value |
|
30
|
10
|
| Foreign Exchange Forward Contracts [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
[1] |
11
|
12
|
| Total liabilities at fair value |
[1] |
2
|
2
|
| Foreign Exchange Forward Contracts [Member] | Fair Value, Inputs, Level 2 [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
[1] |
11
|
12
|
| Total liabilities at fair value |
[1] |
2
|
2
|
| Commodity Derivative Contracts [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
[2] |
1
|
1
|
| Total liabilities at fair value |
[2] |
10
|
10
|
| Commodity Derivative Contracts [Member] | Fair Value, Inputs, Level 1 [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
[2] |
1
|
1
|
| Total liabilities at fair value |
[2] |
9
|
10
|
| Commodity Derivative Contracts [Member] | Fair Value, Inputs, Level 2 [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
[2] |
0
|
0
|
| Total liabilities at fair value |
[2] |
1
|
0
|
| Currency Swap [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
[3] |
52
|
40
|
| Currency Swap [Member] | Fair Value, Inputs, Level 2 [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
[3] |
52
|
40
|
| Deferred Compensation Derivative Contracts [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
[4] |
2
|
1
|
| Total liabilities at fair value |
[4] |
1
|
0
|
| Deferred Compensation Derivative Contracts [Member] | Fair Value, Inputs, Level 2 [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total assets at fair value |
[4] |
2
|
1
|
| Total liabilities at fair value |
[4] |
1
|
0
|
| Interest Rate Contract [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total liabilities at fair value |
[5] |
26
|
8
|
| Interest Rate Contract [Member] | Fair Value, Inputs, Level 2 [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total liabilities at fair value |
[5] |
26
|
8
|
| Deferred Compensation Obligation [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total liabilities at fair value |
[6] |
127
|
120
|
| Deferred Compensation Obligation [Member] | Fair Value, Inputs, Level 1 [Member] |
|
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
|
| Total liabilities at fair value |
[6] |
$ 127
|
$ 120
|
|
|