Debt And Credit Facilities (Summary Of Long-Term Debt) (Details) (USD $) | 3 Months Ended | 12 Months Ended |
In Millions, unless otherwise specified | 3-May-14 | 4-May-13 | Feb. 01, 2014 |
Debt Instrument [Line Items] | ' | ' | ' |
Total secured debt | $373 | $380 | $376 |
Total unsecured debt | 2,744 | 2,746 | 2,737 |
Total long-term debt | 3,117 | 3,126 | 3,113 |
Less: current portion | -7 | -7 | -7 |
Total due beyond one year | 3,110 | 3,119 | 3,106 |
Series 2011-1 Class A Notes, 2.28%, due October 2016 [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total secured debt | 325 | 325 | 325 |
Debt instrument interest rate | 2.28% | 2.28% | 2.28% |
Maturity date | 'October 2016 | 'October 2016 | 'October 2016 |
Mortgage payable, 7.68%, due April 2020 [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total secured debt | 40 | 45 | 42 |
Debt instrument interest rate | 7.68% | 7.68% | 7.68% |
Maturity date | 'April 2020 | 'April 2020 | 'April 2020 |
Other [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total secured debt | 8 | 10 | 9 |
Total unsecured debt | 55 | 57 | 50 |
Senior notes, 6.75%, due June 2014, net of unamortized discount [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total unsecured debt | 0 | 400 | 0 |
Debt instrument interest rate | 6.75% | 6.75% | 6.75% |
Maturity date | 'June 2014 | 'June 2014 | 'June 2014 |
Senior notes, 6.25%, due January 2018, net of unamortized discount [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total unsecured debt | 649 | 648 | 648 |
Debt instrument interest rate | 6.25% | 6.25% | 6.25% |
Maturity date | 'January 2018 | 'January 2018 | 'January 2018 |
Senior notes, 4.75%, due May 2020, net of unamortized discount [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total unsecured debt | 499 | 498 | 499 |
Debt instrument interest rate | 4.75% | 4.75% | 4.75% |
Maturity date | 'May 2020 | 'May 2020 | 'May 2020 |
Senior notes, 4.00%, due October 2021, net of unamortized discount [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total unsecured debt | 499 | 499 | 499 |
Debt instrument interest rate | 4.00% | 4.00% | 4.00% |
Maturity date | 'October 2021 | 'October 2021 | 'October 2021 |
Senior debentures, 6.95%, due March 2028, net of unamortized discount [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total unsecured debt | 300 | 300 | 300 |
Debt instrument interest rate | 6.95% | 6.95% | 6.95% |
Maturity date | 'March 2028 | 'March 2028 | 'March 2028 |
Senior notes, 7.00%, due January 2038, net of unamortized discount [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total unsecured debt | 146 | 344 | 146 |
Debt instrument interest rate | 7.00% | 7.00% | 7.00% |
Maturity date | 'January 2038 | 'January 2038 | 'January 2038 |
Senior notes, 5.00%, due January 2044, net of unamortized discount [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Total unsecured debt | $596 | $0 | $595 |
Debt instrument interest rate | 5.00% | 5.00% | 5.00% |
Maturity date | 'January 2044 | 'January 2044 | 'January 2044 |