|
Pension and Postretirement Health Care Plans (Details 2) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
|
Jan. 28, 2012
|
Jan. 29, 2011
|
Jan. 30, 2010
|
| Expected Amortization of Amounts in Accumulated Other Comprehensive Income |
|
|
|
| Net actuarial loss, pretax |
$ 106 |
|
|
| Prior service credits, pretax |
(10) |
|
|
| Total amortization expense, pretax |
96 |
|
|
| Net actuarial loss, net of tax |
64 |
|
|
| Prior service credits, net of tax |
(6) |
|
|
| Total amortization expense, net of tax |
58 |
|
|
| Defined Benefit Pension Plan Information |
|
|
|
| Accumulated benefit obligation (ABO) for all plans |
2,872 |
2,395 |
|
| Projected benefit obligation for pension plans with an ABO in excess of plan assets |
55 |
47 |
|
| Total ABO for pension plans with an ABO in excess of plan assets |
48 |
42 |
|
| Weighted average assumptions to determine net periodic benefit expense |
|
|
|
| Expected Market-Related Value of Assets, adjustments (as a percent) |
20.00% |
|
|
| Expected Market Value of Assets, adjustment period (in years) |
5 |
|
|
| Ultimate health care cost trend rate (as a percent) |
5.00% |
|
|
| Increase in the cost of covered health care benefits (as a percent) |
7.50% |
|
|
| Health care cost trend rate in 2012 (as a percent) |
7.50% |
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Effect of a one percent increase on the total of service and interest cost components of net periodic postretirement health care benefit expense |
1 |
|
|
| Effect of a one percent decrease on the total of service and interest cost components of net periodic postretirement health care benefit expense |
(1) |
|
|
| Effect of a one percent increase on the health care component of the accumulated postretirement benefit obligation |
7 |
|
|
| Effect of a one percent decrease on the health care component of the accumulated postretirement benefit obligation |
(7) |
|
|
| Current targeted allocation |
100% |
|
|
| Actual allocation (as a percent) |
100.00% |
100.00% |
|
| Actual allocation of common stock of total plan assets included in equity securities (as a percent) |
1.00% |
1.00% |
|
| Actual allocation of real estate in other assets (as a percent) |
4.00% |
|
|
| Fair value of plan assets |
2,921 |
2,430 |
|
| Contributions in transit |
|
85 |
|
| Total fair value of plan assets |
2,921 |
2,515 |
|
| Level 3 Reconciliation |
|
|
|
| Fair value of plan assets at beginning of year |
2,430 |
|
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
2,921 |
2,430 |
|
| Estimated Future Benefit Payments |
|
|
|
| Actual contributions by employer to their qualified defined benefit pension plans |
152 |
153 |
|
|
Qualified Plans
|
|
|
|
| Weighted average assumptions to determine net periodic benefit expense |
|
|
|
| Compound annual rate of return on plan assets for a 5-year period (as a percent) |
5.10% |
|
|
| Compound annual rate of return on plan assets for a 10-year period (as a percent) |
7.80% |
|
|
| Compound annual rate of return on plan assets for a 15-year period (as a percent) |
8.30% |
|
|
|
Pension Benefits
|
|
|
|
| Net Pension and Postretirement Health Care Benefits Expense |
|
|
|
| Service cost of benefits earned during the period |
117 |
115 |
100 |
| Interest cost on projected benefit obligation |
137 |
129 |
125 |
| Expected return on assets |
(206) |
(191) |
(177) |
| Amortization of losses |
67 |
44 |
24 |
| Amortization of prior service cost |
(2) |
(3) |
(2) |
| Total Net Pension and Postretirement Health Care Benefits Expense |
113 |
94 |
70 |
| Weighted average assumptions to determine benefit obligations |
|
|
|
| Discount rate (as a percent) |
4.65% |
5.50% |
|
| Average assumed rate of compensation increase (as a percent) |
3.50% |
4.00% |
|
| Weighted average assumptions to determine net periodic benefit expense |
|
|
|
| Discount rate (as a percent) |
5.50% |
5.85% |
6.50% |
| Expected long-term rate of return on plan assets (as a percent) |
8.00% |
8.00% |
8.00% |
| Average assumed rate of compensation increase |
4.00% |
4.00% |
4.25% |
| Estimated Future Benefit Payments |
|
|
|
| 2012 |
131 |
|
|
| 2013 |
140 |
|
|
| 2014 |
149 |
|
|
| 2015 |
157 |
|
|
| 2016 |
165 |
|
|
| 2017-2021 |
958 |
|
|
|
Pension Benefits | Qualified Plans
|
|
|
|
| Net Pension and Postretirement Health Care Benefits Expense |
|
|
|
| Service cost of benefits earned during the period |
116 |
114 |
|
| Interest cost on projected benefit obligation |
135 |
127 |
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
2,921 |
2,515 |
|
| Level 3 Reconciliation |
|
|
|
| Fair value of plan assets at beginning of year |
2,515 |
2,157 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
2,921 |
2,515 |
|
|
Pension Benefits | Nonqualified Plans
|
|
|
|
| Net Pension and Postretirement Health Care Benefits Expense |
|
|
|
| Service cost of benefits earned during the period |
1 |
1 |
|
| Interest cost on projected benefit obligation |
2 |
2 |
|
|
Postretirement Health Care Benefits
|
|
|
|
| Net Pension and Postretirement Health Care Benefits Expense |
|
|
|
| Service cost of benefits earned during the period |
10 |
9 |
7 |
| Interest cost on projected benefit obligation |
4 |
4 |
6 |
| Amortization of losses |
4 |
4 |
2 |
| Amortization of prior service cost |
(10) |
(10) |
(2) |
| Total Net Pension and Postretirement Health Care Benefits Expense |
8 |
7 |
13 |
| Weighted average assumptions to determine benefit obligations |
|
|
|
| Discount rate (as a percent) |
3.60% |
4.35% |
|
| Weighted average assumptions to determine net periodic benefit expense |
|
|
|
| Discount rate (as a percent) |
4.35% |
4.85% |
6.50% |
| Estimated Future Benefit Payments |
|
|
|
| 2012 |
6 |
|
|
| 2013 |
7 |
|
|
| 2014 |
7 |
|
|
| 2015 |
8 |
|
|
| 2016 |
9 |
|
|
| 2017-2021 |
63 |
|
|
|
Postretirement Health Care Benefits | Maximum
|
|
|
|
| Actual return on plan assets |
|
|
|
| Estimated contribution by employer in the next fiscal year |
10 |
|
|
|
Postretirement Health Care Benefits | Minimum
|
|
|
|
| Actual return on plan assets |
|
|
|
| Estimated contribution by employer in the next fiscal year |
5 |
|
|
|
Cash and cash equivalents
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
263 |
195 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
263 |
195 |
|
|
Common collective trusts
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
653 |
490 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
653 |
490 |
|
|
Equity securities
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
|
36 |
|
| Contributions in transit |
|
20 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
|
36 |
|
|
Domestic equity securities
|
|
|
|
| Weighted average assumptions to determine net periodic benefit expense |
|
|
|
| Expected annualized long-term rate of return on plan assets (as a percent) |
8.50% |
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Current targeted allocation |
19% |
|
|
| Actual allocation (as a percent) |
19.00% |
18.00% |
|
|
International equity securities
|
|
|
|
| Weighted average assumptions to determine net periodic benefit expense |
|
|
|
| Expected annualized long-term rate of return on plan assets (as a percent) |
8.50% |
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Current targeted allocation |
12% |
|
|
| Actual allocation (as a percent) |
11.00% |
10.00% |
|
|
Government securities
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
356 |
259 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
356 |
259 |
|
|
Fixed income
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
466 |
397 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
466 |
397 |
|
|
Debt securities
|
|
|
|
| Weighted average assumptions to determine net periodic benefit expense |
|
|
|
| Expected annualized long-term rate of return on plan assets (as a percent) |
5.50% |
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Current targeted allocation |
25% |
|
|
| Actual allocation (as a percent) |
29.00% |
25.00% |
|
|
Balanced funds
|
|
|
|
| Weighted average assumptions to determine net periodic benefit expense |
|
|
|
| Expected annualized long-term rate of return on plan assets (as a percent) |
8.50% |
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Current targeted allocation |
30% |
|
|
| Actual allocation (as a percent) |
25.00% |
26.00% |
|
| Fair value of plan assets |
744 |
|
|
| Contributions in transit |
|
65 |
|
| Level 3 Reconciliation |
|
|
|
| Fair value of plan assets at beginning of year |
596 |
|
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
744 |
|
|
|
Private equity funds
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
283 |
327 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
283 |
327 |
|
|
Other assets
|
|
|
|
| Weighted average assumptions to determine net periodic benefit expense |
|
|
|
| Expected annualized long-term rate of return on plan assets (as a percent) |
10.00% |
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Current targeted allocation |
14% |
|
|
| Actual allocation (as a percent) |
16.00% |
21.00% |
|
| Fair value of plan assets |
156 |
|
|
| Level 3 Reconciliation |
|
|
|
| Fair value of plan assets at beginning of year |
130 |
|
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
156 |
|
|
|
Level 1
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
11 |
36 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
11 |
36 |
|
|
Level 1 | Cash and cash equivalents
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
11 |
|
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
11 |
|
|
|
Level 1 | Equity securities
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
|
36 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
|
36 |
|
|
Level 2
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
2,512 |
1,940 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
2,512 |
1,940 |
|
|
Level 2 | Cash and cash equivalents
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
252 |
195 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
252 |
195 |
|
|
Level 2 | Common collective trusts
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
653 |
490 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
653 |
490 |
|
|
Level 2 | Government securities
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
356 |
259 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
356 |
259 |
|
|
Level 2 | Fixed income
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
466 |
397 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
466 |
397 |
|
|
Level 2 | Balanced funds
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
744 |
596 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
744 |
596 |
|
|
Level 2 | Other assets
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
41 |
3 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
41 |
3 |
|
|
Level 3
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
398 |
454 |
|
| Actual return on plan assets |
|
|
|
| Fair value of plan assets at end of year |
398 |
454 |
|
|
Level 3 | Private equity funds
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
283 |
327 |
|
| Level 3 Reconciliation |
|
|
|
| Fair value of plan assets at beginning of year |
327 |
336 |
|
| Actual return on plan assets |
|
|
|
| Assets held at reporting date |
(6) |
28 |
|
| Assets sold during the period |
26 |
12 |
|
| Purchases, sales and settlements |
(64) |
(49) |
|
| Fair value of plan assets at end of year |
283 |
327 |
|
|
Level 3 | Other assets
|
|
|
|
| Effect of a one percent change in health care cost trend rates |
|
|
|
| Fair value of plan assets |
115 |
127 |
|
| Level 3 Reconciliation |
|
|
|
| Fair value of plan assets at beginning of year |
127 |
119 |
|
| Actual return on plan assets |
|
|
|
| Assets held at reporting date |
9 |
7 |
|
| Assets sold during the period |
|
2 |
|
| Purchases, sales and settlements |
(21) |
(1) |
|
| Fair value of plan assets at end of year |
$ 115 |
$ 127 |
|