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Postretirement Plans (Tables) | 12 Months Ended
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Dec. 31, 2017
Retirement Benefits [Abstract] |
Schedule Of Net Periodic Benefit Costs | The net periodic benefit cost recognized each year included the following (in millions):
|  | Qualified Defined Benefit Pension Plans (a) |  |  | Retiree Medical and Life Insurance Plans
|  | 2017 |  |  | 2016 |  |  | 2015 |  |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Service cost |  | $ | 820 |  |  | $ | 827 |  |  | $ | 836 |  |  |  | $ | 20 |  |  | $ | 24 |  |  | $ | 21 |
Interest cost |  | 1,809 |  |  | 1,861 |  |  | 1,791 |  |  |  | 102 |  |  | 119 |  |  | 110 |
Expected return on plan assets |  | (2,408 | ) |  | (2,666 | ) |  | (2,734 | ) |  |  | (128 | ) |  | (138 | ) |  | (147 | )
Recognized net actuarial losses |  | 1,506 |  |  | 1,359 |  |  | 1,599 |  |  |  | 19 |  |  | 34 |  |  | 43 |
Amortization of net prior service (credit) cost (b) |  | (355 | ) |  | (362 | ) |  | (365 | ) |  |  | 15 |  |  | 22 |  |  | 4 |
Total net periodic benefit cost |  | $ | 1,372 |  |  | $ | 1,019 |  |  | $ | 1,127 |  |  |  | $ | 28 |  |  | $ | 61 |  |  | $ | 31 |
(a) | Total net periodic benefit cost associated with our qualified defined benefit plans represents pension expense calculated in accordance with GAAP (FAS pension expense). We are required to calculate pension expense in accordance with both GAAP and CAS rules, each of which results in a different calculated amount of pension expense. The CAS pension cost is recovered through the pricing of our products and services on U.S. Government contracts and, therefore, is recognized in net sales and cost of sales for products and services. We include the difference between FAS pension expense and CAS pension cost, referred to as the FAS/CAS pension adjustment, as a component of other unallocated, net on our consolidated statements of earnings. The FAS/CAS pension adjustment, which was $876 million in 2017, $902 million in 2016, and $400 million in 2015, effectively adjusts the amount of CAS pension cost in the business segment operating profit so that pension expense recorded on our consolidated statements of earnings is equal to FAS pension expense. FAS pension expense and CAS pension costs reflect the reclassification for discontinued operations presentation of benefits related to former IS&GS salaried employees.
(b) | Net of the reclassification for discontinued operations presentation of pension benefits related to former IS&GS salaried employees ($14 million in 2016 and $24 million in 2015).
Reconciliation of Benefit Obligations, Plan Assets, and Unfunded or Funded Status | The following table provides a reconciliation of benefit obligations, plan assets and unfunded status related to our qualified defined benefit pension plans and our retiree medical and life insurance plans (in millions):
|  | Qualified Defined Benefit Pension Plans |  |  | Retiree Medical and Life Insurance Plans
|  | 2017 |  |  | 2016 |  |  |  | 2017 |  |  | 2016 |
Change in benefit obligation |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | 45,064 |  |  | $ | 43,702 |  |  |  | $ | 2,649 |  |  | $ | 2,883 |
Service cost |  | 820 |  |  | 827 |  |  |  | 20 |  |  | 24 |
Interest cost |  | 1,809 |  |  | 1,861 |  |  |  | 102 |  |  | 119 |
Benefits paid |  | (2,310 | ) |  | (2,172 | ) |  |  | (232 | ) |  | (222 | )
Actuarial losses (gains) |  | 3,377 |  |  | 1,402 |  |  |  | 23 |  |  | (135 | )
Changes in longevity assumptions (a) |  | (352 | ) |  | (687 | ) |  |  | (24 | ) |  | (53 | )
Plan amendments and acquisitions (b) |  | 278 |  |  | 110 |  |  |  | — |  |  | (32 | )
Service cost related to discontinued operations |  | — |  |  | 21 |  |  |  | — |  |  | — |
Medicare Part D subsidy |  | — |  |  | — |  |  |  | — |  |  | 4 |
Participants’ contributions |  | — |  |  | — |  |  |  | 64 |  |  | 61 |
Ending balance |  | $ | 48,686 |  |  | $ | 45,064 |  |  |  | $ | 2,602 |  |  | $ | 2,649 |
Change in plan assets |  |  |  |  |  |  |  |  |
Beginning balance at fair value |  | $ | 31,417 |  |  | $ | 32,096 |  |  |  | $ | 1,787 |  |  | $ | 1,813 |
Actual return on plan assets |  | 3,942 |  |  | 1,470 |  |  |  | 224 |  |  | 95 |
Benefits paid |  | (2,310 | ) |  | (2,172 | ) |  |  | (232 | ) |  | (222 | )
Company contributions |  | 46 |  |  | 23 |  |  |  | 40 |  |  | 36 |
Medicare Part D subsidy |  | — |  |  | — |  |  |  | — |  |  | 4 |
Participants’ contributions |  | — |  |  | — |  |  |  | 64 |  |  | 61 |
Ending balance at fair value |  | $ | 33,095 |  |  | $ | 31,417 |  |  |  | $ | 1,883 |  |  | $ | 1,787 |
Unfunded status of the plans |  | $ | (15,591 | ) |  | $ | (13,647 | ) |  |  | $ | (719 | ) |  | $ | (862 | )
(a) | As published by the Society of Actuaries.
(b) | Includes special termination benefits of $27 million for qualified pension, and $9 million for retiree medical, recognized in 2016 related to former IS&GS salaried employees.
Amounts Recognized on Balance Sheets Related to Qualified Defined Benefit Pension Plans and Retiree Medical and Life Insurance Plans | The following table provides amounts recognized on our consolidated balance sheets related to our qualified defined benefit pension plans and our retiree medical and life insurance plans (in millions):
|  | Qualified Defined Benefit Pension Plans |  |  | Retiree Medical and Life Insurance Plans
|  | 2017 |  |  | 2016 |  |  |  | 2017 |  |  | 2016 |
Prepaid pension asset |  | $ | 112 |  |  | $ | 208 |  |  |  | $ | — |  |  | $ | — |
Accrued postretirement benefit liabilities |  | (15,703 | ) |  | (13,855 | ) |  |  | (719 | ) |  | (862 | )
Accumulated other comprehensive loss (pre-tax) related to: |  |  |  |  |  |  |  |  |
Net actuarial losses |  | 20,169 |  |  | 20,184 |  |  |  | 331 |  |  | 447 |
Prior service (credit) cost (a) |  | (2,263 | ) |  | (2,896 | ) |  |  | 81 |  |  | 96 |
Total (b) |  | $ | 17,906 |  |  | $ | 17,288 |  |  |  | $ | 412 |  |  | $ | 543 |
(a) | During 2016 pre-tax amounts of $210 million for qualified pension prior service credits and $9 million for retiree medical prior service costs were recognized from the divestiture of our IS&GS business (combined $134 million, net of tax).
(b) | Accumulated other comprehensive loss related to postretirement benefit plans, after tax, of $12.6 billion and $12.0 billion at December 31, 2017 and 2016 (see “Note 12 – Stockholders’ Equity”) includes $17.9 billion ($11.8 billion, net of tax) and $17.3 billion ($11.2 billion, net of tax) for qualified defined benefit pension plans, $412 million ($252 million, net of tax) and $543 million ($351 million, net of tax) for retiree medical and life insurance plans and $705 million ($479 million, net of tax) and $677 million ($448 million, net of tax) for other plans.
Accumulated Benefit Obligations In Excess Of Fair Value Of Plan Assets | Certain key information related to our qualified defined benefit pension plans as of December 31, 2017 and 2016 is as follows (in millions):
|  | 2017 |  |  | 2016 |
Plans where ABO was in excess of plan assets |  |  |  |
Projected benefit obligation |  | $ | 48,628 |  |  | $ | 44,946 |
Less: fair value of plan assets |  | 32,925 |  |  | 31,091 |
Unfunded status of plans (a) |  | (15,703 | ) |  | (13,855 | )
Plans where ABO was less than plan assets |  |  |  |
Projected benefit obligation |  | 58 |  |  | 118 |
Less: fair value of plan assets |  | 170 |  |  | 326 |
Funded status of plans (b) |  | $ | 112 |  |  | $ | 208 |
(a) | Represents accrued pension liabilities, which are included on our consolidated balance sheets.
(b) | Represents prepaid pension assets, which are included on our consolidated balance sheets in other noncurrent assets.
Amounts Recognized in Other Comprehensive Income (Loss) Related to Postretirement Benefit Plans, Net of Tax | The following table provides the amounts recognized in other comprehensive income (loss) related to postretirement benefit plans, net of tax, for the years ended December 31, 2017, 2016 and 2015 (in millions):
|  | Incurred but Not Yet Recognized in Net Periodic Benefit Cost |  |  | Recognition of Previously Deferred Amounts
|  | 2017 |  |  | 2016 |  |  | 2015 |  |  |  | 2017 |  |  | 2016 |  |  | 2015 |
|  | Gains (losses) |  |  | (Gains) losses
Actuarial gains and losses |  |  |  |  |  |  |  |  |  |  |
Qualified defined benefit pension plans |  | $ | (1,172 | ) |  | $ | (1,236 | ) |  | $ | (291 | ) |  |  | $ | 974 |  |  | $ | 879 |  |  | $ | 1,034 |
Retiree medical and life insurance plans |  | 77 |  |  | 94 |  |  | 46 |  |  |  | 12 |  |  | 22 |  |  | 28 |
Other plans |  | (66 | ) |  | (62 | ) |  | 21 |  |  |  | 44 |  |  | 37 |  |  | 47 |
|  | (1,161 | ) |  | (1,204 | ) |  | (224 | ) |  |  | 1,030 |  |  | 938 |  |  | 1,109 |
|  | Credit (cost) |  |  | (Credit) cost (a)
Net prior service credit and cost |  |  |  |  |  |  |  |  |  |  |
Qualified defined benefit pension plans |  | (219 | ) |  | (54 | ) |  | (18 | ) |  |  | (229 | ) |  | (235 | ) |  | (235 | )
Retiree medical and life insurance plans |  | — |  |  | 27 |  |  | (102 | ) |  |  | 10 |  |  | 14 |  |  | 2 |
Other plans |  | — |  |  | (1 | ) |  | (7 | ) |  |  | (9 | ) |  | (9 | ) |  | (10 | )
|  | (219 | ) |  | (28 | ) |  | (127 | ) |  |  | (228 | ) |  | (230 | ) |  | (243 | )
|  | $ | (1,380 | ) |  | $ | (1,232 | ) |  | $ | (351 | ) |  |  | $ | 802 |  |  | $ | 708 |  |  | $ | 866 |
(a) | Reflects the reclassification for discontinued operations presentation of benefits related to former IS&GS salaried employees ($9 million in 2016 and $16 million in 2015). In addition, we recognized $134 million in 2016 of prior service credits from the divestiture of our IS&GS business, which were reclassified as discontinued operations.
Actuarial Assumptions Used to Determine Net Periodic Benefit Cost | The actuarial assumptions used to determine the benefit obligations at December 31 of each year and to determine the net periodic benefit cost for each subsequent year, were as follows:
|  | Qualified Defined Benefit Pension Plans |  |  | Retiree Medical and Life Insurance Plans
|  | 2017 |  |  | 2016 |  |  | 2015 |  |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Weighted average discount rate |  | 3.625 | % |  | 4.125 | % |  | 4.375 | % |  |  | 3.625 | % |  | 4.000 | % |  | 4.250 | %
Expected long-term rate of return on assets |  | 7.50 | % |  | 7.50 | % |  | 8.00 | % |  |  | 7.50 | % |  | 7.50 | % |  | 8.00 | %
Rate of increase in future compensation levels (for applicable bargained pension plans) |  | 4.50 | % |  | 4.50 | % |  | 4.50 | % |  |  |  |  |  |  |
Health care trend rate assumed for next year |  |  |  |  |  |  |  |  | 8.50 | % |  | 8.75 | % |  | 9.00 | %
Ultimate health care trend rate |  |  |  |  |  |  |  |  | 5.00 | % |  | 5.00 | % |  | 5.00 | %
Year that the ultimate health care trend rate is reached |  |  |  |  |  |  |  |  | 2032 |  |  | 2032 |  |  | 2032 |
Schedule of Allocation of Plan Assets | LMIMCo’s investment policies require that asset allocations of postretirement benefit plans be maintained within the following approximate ranges:
Asset Class | Asset Allocation Ranges
Cash and cash equivalents | 0-20%
Equity | 15-65%
Fixed income | 10-60%
Alternative investments: |
Private equity funds | 0-15%
Real estate funds | 0-10%
Hedge funds | 0-20%
Commodities | 0-15%
The following table presents the fair value of the assets (in millions) of our qualified defined benefit pension plans and retiree medical and life insurance plans by asset category and their level within the fair value hierarchy, which has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets, Level 2 refers to fair values estimated using significant other observable inputs and Level 3 includes fair values estimated using significant unobservable inputs. Certain other investments are measured at their Net Asset Value (NAV) per share and do not have readily determined values and are thus not subject to leveling in the fair value hierarchy. The NAV is the total value of the fund divided by the number of the fund’s shares outstanding. We recognize transfers between levels of the fair value hierarchy as of the date of the change in circumstances that causes the transfer. We did not have any transfers of assets between Level 1 and Level 2 of the fair value hierarchy during 2017.
| December 31, 2017 |  |  | December 31, 2016
| Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  |  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Investments measured at fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents (a) | $ | 1,419 |  |  | $ | 1,419 |  |  | $ | — |  |  | $ | — |  |  |  | $ | 2,301 |  |  | $ | 2,301 |  |  | $ | — |  |  | $ | — |
Equity (a): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. equity securities | 4,922 |  |  | 4,905 |  |  | 14 |  |  | 3 |  |  |  | 4,166 |  |  | 4,139 |  |  | 23 |  |  | 4 |
International equity securities | 5,370 |  |  | 5,355 |  |  | 13 |  |  | 2 |  |  |  | 3,971 |  |  | 3,927 |  |  | 40 |  |  | 4 |
Commingled equity funds | 4,453 |  |  | 1,493 |  |  | 2,960 |  |  | — |  |  |  | 2,332 |  |  | 788 |  |  | 1,544 |  |  | — |
Fixed income (a): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities | 4,910 |  |  | — |  |  | 4,905 |  |  | 5 |  |  |  | 4,333 |  |  | — |  |  | 4,316 |  |  | 17 |
U.S. Government securities | 3,775 |  |  | — |  |  | 3,775 |  |  | — |  |  |  | 6,811 |  |  | — |  |  | 6,811 |  |  | — |
U.S. Government-sponsored enterprise securities | 817 |  |  | — |  |  | 817 |  |  | — |  |  |  | 919 |  |  | — |  |  | 919 |  |  | — |
Other fixed income investments | 2,412 |  |  | — |  |  | 2,401 |  |  | 11 |  |  |  | 2,215 |  |  | — |  |  | 2,214 |  |  | 1 |
Alternative investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hedge funds | 7 |  |  | — |  |  | 7 |  |  | — |  |  |  | 33 |  |  | — |  |  | 33 |  |  | — |
Commodities (a) | 2 |  |  | 1 |  |  | 1 |  |  | — |  |  |  | 523 |  |  | 525 |  |  | (2 | ) |  | — |
Total | $ | 28,087 |  |  | $ | 13,173 |  |  | $ | 14,893 |  |  | $ | 21 |  |  |  | $ | 27,604 |  |  | $ | 11,680 |  |  | $ | 15,898 |  |  | $ | 26 |
Investments measured at NAV (b) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commingled equity funds | 99 |  |  |  |  |  |  |  |  |  | 60 |  |  |  |  |  |  |
Other fixed income investments | 68 |  |  |  |  |  |  |  |  |  | — |  |  |  |  |  |  |
Private equity funds | 4,334 |  |  |  |  |  |  |  |  |  | 3,614 |  |  |  |  |  |  |
Real estate funds | 1,611 |  |  |  |  |  |  |  |  |  | 1,411 |  |  |  |  |  |  |
Hedge funds | 711 |  |  |  |  |  |  |  |  |  | 462 |  |  |  |  |  |  |
Total investments measured at NAV | 6,823 |  |  |  |  |  |  |  |  |  | 5,547 |  |  |  |  |  |  |
Receivables, net | 68 |  |  |  |  |  |  |  |  |  | 53 |  |  |  |  |  |  |
Total | $ | 34,978 |  |  |  |  |  |  |  |  |  | $ | 33,204 |  |  |  |  |  |  |
(a) | Cash and cash equivalents, equity securities, fixed income securities and commodities included derivative assets and liabilities whose fair values were not material as of December 31, 2017 and 2016. LMIMCo’s investment policies restrict the use of derivatives to either establish long exposures for purposes of expediency or capital efficiency or to hedge risks to the extent of a plan’s current exposure to such risks. Most derivative transactions are settled on a daily basis.
(b) | Certain investments that are valued using the net asset value per share (or its equivalent) as a practical expedient have not been classified in the fair value hierarchy and are included in the table to permit reconciliation of the fair value hierarchy to the aggregate postretirement benefit plan assets.
Estimated Future Benefit Payments | The following table presents estimated future benefit payments, which reflect expected future employee service, as of December 31, 2017 (in millions):
|  | 2018 |  |  | 2019 |  |  | 2020 |  |  | 2021 |  |  | 2022 |  |  | 2023 – 2027 |
Qualified defined benefit pension plans |  | $ | 2,450 |  |  | $ | 2,480 |  |  | $ | 2,560 |  |  | $ | 2,630 |  |  | $ | 2,700 |  |  | $ | 14,200 |
Retiree medical and life insurance plans |  | 180 |  |  | 180 |  |  | 180 |  |  | 180 |  |  | 180 |  |  | 820 |

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