|
Retirement Benefit Plans (Level 3 Investment Assets) (Details) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
|
Feb. 01, 2014
|
Feb. 02, 2013
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
|
|
| Number of hedge fund managers (more than) |
30 |
|
|
Corporate bonds [Member]
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
| Balance, beginning of year |
$ 10 |
$ 9 |
| Transfers, net |
0 |
0 |
| Realized gains |
0 |
(1) |
| Unrealized gains/(losses) |
(1) |
0 |
| Purchases and issuances |
2 |
6 |
| Sales, maturities and settlements |
0 |
(4) |
| Balance, end of year |
11 |
10 |
|
Corporate loans [Member]
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
| Balance, beginning of year |
12 |
27 |
| Transfers, net |
0 |
0 |
| Realized gains |
0 |
(1) |
| Unrealized gains/(losses) |
0 |
0 |
| Purchases and issuances |
2 |
3 |
| Sales, maturities and settlements |
(8) |
(17) |
| Balance, end of year |
6 |
12 |
|
Hedge Funds [Member]
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
| Balance, beginning of year |
0 |
|
| Transfers, net |
0 |
|
| Realized gains |
0 |
|
| Unrealized gains/(losses) |
3 |
|
| Purchases and issuances |
150 |
|
| Sales, maturities and settlements |
0 |
|
| Balance, end of year |
153 |
|
|
Private Equity Funds [Member]
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
| Balance, beginning of year |
297 |
299 |
| Transfers, net |
0 |
0 |
| Realized gains |
38 |
33 |
| Unrealized gains/(losses) |
3 |
(5) |
| Purchases and issuances |
33 |
47 |
| Sales, maturities and settlements |
(73) |
(77) |
| Balance, end of year |
298 |
297 |
|
Private real estate [Member]
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
| Balance, beginning of year |
231 |
255 |
| Transfers, net |
0 |
3 |
| Realized gains |
5 |
0 |
| Unrealized gains/(losses) |
11 |
7 |
| Purchases and issuances |
4 |
6 |
| Sales, maturities and settlements |
(47) |
(40) |
| Balance, end of year |
$ 204 |
$ 231 |