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Pension and Postretirement Benefit Plans - Pension Asset Fair Values (Details) - Funded - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Qualified and Non-qualified Pension Benefits | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | $ 15,062 | $ 15,939 |
Other items to reconcile to fair value of plan assets | (259) | (253) |
Fair value of plan assets | 14,803 | 15,686 | $ 14,081
Qualified and Non-qualified Pension Benefits | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 6,223 | 6,758 |
Other items to reconcile to fair value of plan assets | (53) | (21) |
Fair value of plan assets | 6,170 | 6,737 | 5,617
Qualified and Non-qualified Pension Benefits | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 4,988 | 5,949 |
Qualified and Non-qualified Pension Benefits | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,578 | 2,014 |
Qualified and Non-qualified Pension Benefits | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 4,464 | 3,896 |
Qualified and Non-qualified Pension Benefits | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,828 | 2,898 |
Qualified and Non-qualified Pension Benefits | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | (6) |
Qualified and Non-qualified Pension Benefits | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 527 | 547 |
Qualified and Non-qualified Pension Benefits | Global equity | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,975 | 3,517 |
Qualified and Non-qualified Pension Benefits | Global equity | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,014 | 2,465 |
Qualified and Non-qualified Pension Benefits | Global equity | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,603 | 3,095 |
Qualified and Non-qualified Pension Benefits | Global equity | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 961 | 1,318 |
Qualified and Non-qualified Pension Benefits | Global equity | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,032 | 1,122 |
Qualified and Non-qualified Pension Benefits | Global equity | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 4 |
Qualified and Non-qualified Pension Benefits | U.S. equities | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,369 | 1,568 |
Qualified and Non-qualified Pension Benefits | U.S. equities | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,369 | 1,568 |
Qualified and Non-qualified Pension Benefits | Non-U.S. equities | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,234 | 1,527 |
Qualified and Non-qualified Pension Benefits | Non-U.S. equities | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,234 | 1,527 |
Qualified and Non-qualified Pension Benefits | Growth equities | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 708 | 948 |
Qualified and Non-qualified Pension Benefits | Growth equities | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 460 | 659 |
Qualified and Non-qualified Pension Benefits | Growth equities | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 248 | 289 |
Qualified and Non-qualified Pension Benefits | Value equities | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 488 | 640 |
Qualified and Non-qualified Pension Benefits | Value equities | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 446 | 597 |
Qualified and Non-qualified Pension Benefits | Value equities | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 42 | 43 |
Qualified and Non-qualified Pension Benefits | Core equities | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 802 | 856 |
Qualified and Non-qualified Pension Benefits | Core equities | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 55 | 62 |
Qualified and Non-qualified Pension Benefits | Core equities | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 742 | 790 |
Qualified and Non-qualified Pension Benefits | Core equities | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 4 |
Qualified and Non-qualified Pension Benefits | Equities valued at net asset value | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 16 | 21 |
Qualified and Non-qualified Pension Benefits | Index and long/short equity | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 372 | 422 |
Qualified and Non-qualified Pension Benefits | Fixed income | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 6,256 | 6,970 |
Qualified and Non-qualified Pension Benefits | Fixed income | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 3,180 | 3,249 |
Qualified and Non-qualified Pension Benefits | Fixed income | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,900 | 2,680 |
Qualified and Non-qualified Pension Benefits | Fixed income | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 540 | 593 |
Qualified and Non-qualified Pension Benefits | Fixed income | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 4,347 | 4,282 |
Qualified and Non-qualified Pension Benefits | Fixed income | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,665 | 1,666 |
Qualified and Non-qualified Pension Benefits | Fixed income | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 14 | 14 |
Qualified and Non-qualified Pension Benefits | U.S. government securities | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,621 | 3,150 |
Qualified and Non-qualified Pension Benefits | U.S. government securities | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,889 | 2,666 |
Qualified and Non-qualified Pension Benefits | U.S. government securities | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 732 | 484 |
Qualified and Non-qualified Pension Benefits | Domestic government debt | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 690 | 622 |
Qualified and Non-qualified Pension Benefits | Domestic government debt | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 334 | 362 |
Qualified and Non-qualified Pension Benefits | Domestic government debt | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 351 | 256 |
Qualified and Non-qualified Pension Benefits | Domestic government debt | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 4 |
Qualified and Non-qualified Pension Benefits | Foreign government agency securities | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 44 | 168 |
Qualified and Non-qualified Pension Benefits | Foreign government agency securities | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 471 | 506 |
Qualified and Non-qualified Pension Benefits | Foreign government agency securities | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 150 | 168 |
Qualified and Non-qualified Pension Benefits | Foreign government agency securities | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 44 | 168 |
Qualified and Non-qualified Pension Benefits | Foreign government agency securities | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 321 | 338 |
Qualified and Non-qualified Pension Benefits | Preferred and convertible securities | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 44 | 6 |
Qualified and Non-qualified Pension Benefits | Preferred and convertible securities | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | 4 |
Qualified and Non-qualified Pension Benefits | Preferred and convertible securities | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 44 | 2 |
Qualified and Non-qualified Pension Benefits | U.S. corporate bonds | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,950 | 2,914 |
Qualified and Non-qualified Pension Benefits | U.S. corporate bonds | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 9 | 10 |
Qualified and Non-qualified Pension Benefits | U.S. corporate bonds | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,941 | 2,904 |
Qualified and Non-qualified Pension Benefits | Non-U.S. corporate bonds | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 475 | 614 |
Qualified and Non-qualified Pension Benefits | Non-U.S. corporate bonds | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 475 | 614 |
Qualified and Non-qualified Pension Benefits | Corporate debt securities | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,058 | 1,145 |
Qualified and Non-qualified Pension Benefits | Corporate debt securities | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 56 | 63 |
Qualified and Non-qualified Pension Benefits | Corporate debt securities | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 993 | 1,072 |
Qualified and Non-qualified Pension Benefits | Corporate debt securities | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 9 | 10 |
Qualified and Non-qualified Pension Benefits | Other | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 9 | 8 |
Qualified and Non-qualified Pension Benefits | Derivative instruments | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 113 | 110 |
Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2 |  |
Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 111 | 110 |
Qualified and Non-qualified Pension Benefits | Fixed income securities valued at net asset value | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 961 | 976 |
Qualified and Non-qualified Pension Benefits | Private equity | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,109 | 2,089 |
Qualified and Non-qualified Pension Benefits | Private equity | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 210 | 217 |
Qualified and Non-qualified Pension Benefits | Private equity | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 45 | 34 |
Qualified and Non-qualified Pension Benefits | Private equity | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 36 |
Qualified and Non-qualified Pension Benefits | Private equity | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 75 | 74 |
Qualified and Non-qualified Pension Benefits | Private equity | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | (7) |
Qualified and Non-qualified Pension Benefits | Private equity | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 4 | 3 |
Qualified and Non-qualified Pension Benefits | Derivative instruments | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | (7) |
Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | (7) |
Qualified and Non-qualified Pension Benefits | Growth equity | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 45 | 34 |
Qualified and Non-qualified Pension Benefits | Growth equity | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 45 | 34 |
Qualified and Non-qualified Pension Benefits | Real estate | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 84 | 113 |
Qualified and Non-qualified Pension Benefits | Real estate | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 36 |
Qualified and Non-qualified Pension Benefits | Real estate | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 75 | 74 |
Qualified and Non-qualified Pension Benefits | Real estate | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 4 | 3 |
Qualified and Non-qualified Pension Benefits | Real estate valued at net asset value | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 37 | 36 |
Qualified and Non-qualified Pension Benefits | Partnership investments | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,064 | 2,062 |
Qualified and Non-qualified Pension Benefits | Partnership investments | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 89 | 68 |
Qualified and Non-qualified Pension Benefits | Absolute return | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2,437 | 2,339 |
Qualified and Non-qualified Pension Benefits | Absolute return | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 725 | 723 |
Qualified and Non-qualified Pension Benefits | Absolute return | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 28 | 31 |
Qualified and Non-qualified Pension Benefits | Absolute return | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1 |  |
Qualified and Non-qualified Pension Benefits | Absolute return | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 114 | 102 |
Qualified and Non-qualified Pension Benefits | Absolute return | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 34 | 2 |
Qualified and Non-qualified Pension Benefits | Absolute return | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 504 | 526 |
Qualified and Non-qualified Pension Benefits | Insurance | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 496 | 519 |
Qualified and Non-qualified Pension Benefits | Insurance | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 496 | 519 |
Qualified and Non-qualified Pension Benefits | Hedge fund/fund of funds | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,866 | 1,871 |
Qualified and Non-qualified Pension Benefits | Fixed income and other | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 142 | 133 |
Qualified and Non-qualified Pension Benefits | Fixed income and other | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 28 | 31 |
Qualified and Non-qualified Pension Benefits | Fixed income and other | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 114 | 102 |
Qualified and Non-qualified Pension Benefits | Partnership investments - absolute return | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 429 | 335 |
Qualified and Non-qualified Pension Benefits | Derivatives - absolute return | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2 | 2 |
Qualified and Non-qualified Pension Benefits | Derivatives - absolute return | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1 |  |
Qualified and Non-qualified Pension Benefits | Derivatives - absolute return | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1 | 2 |
Qualified and Non-qualified Pension Benefits | Other | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 41 | 7 |
Qualified and Non-qualified Pension Benefits | Other | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 33 |  |
Qualified and Non-qualified Pension Benefits | Other | Level 3 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 8 | 7 |
Qualified and Non-qualified Pension Benefits | Other valued at net asset value | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | 1 |
Qualified and Non-qualified Pension Benefits | Hedge funds | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 186 | 194 |
Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalent | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,285 | 1,024 |
Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalent | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 94 | 104 |
Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalent | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 412 | 109 |
Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalent | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 71 | 67 |
Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalent | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 3 | (488) |
Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalent | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 22 | 34 |
Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalent | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | 1 |
Qualified and Non-qualified Pension Benefits | Cash and cash equivalents | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 416 | 124 |
Qualified and Non-qualified Pension Benefits | Cash and cash equivalents | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 93 | 101 |
Qualified and Non-qualified Pension Benefits | Cash and cash equivalents | Level 1 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 412 | 109 |
Qualified and Non-qualified Pension Benefits | Cash and cash equivalents | Level 1 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 71 | 67 |
Qualified and Non-qualified Pension Benefits | Cash and cash equivalents | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 4 | 14 |
Qualified and Non-qualified Pension Benefits | Cash and cash equivalents | Level 2 | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 22 | 34 |
Qualified and Non-qualified Pension Benefits | Cash and cash equivalents | Level 3 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | 1 |
Qualified and Non-qualified Pension Benefits | Repurchase Agreements And Derivative Margin Activity | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | (1) | (502) |
Qualified and Non-qualified Pension Benefits | Repurchase Agreements And Derivative Margin Activity | Level 2 | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | (1) | (502) |
Qualified and Non-qualified Pension Benefits | Cash and cash equivalents valued at net asset value | United States |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 870 | 1,402 |
Qualified and Non-qualified Pension Benefits | Cash and cash equivalents valued at net asset value | International |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1 | 3 |
Postretirement Benefits |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1,272 | 1,407 |
Other items to reconcile to fair value of plan assets | (12) | (10) |
Fair value of plan assets | $ 1,260 | 1,397 | $ 1,356
Percentage of plan assets within 401h account | 50.00% |  |
Postretirement Benefits | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | $ 576 | 709 |
Postretirement Benefits | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 426 | 397 |
Postretirement Benefits | Global equity |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 448 | 581 |
Postretirement Benefits | Global equity | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 414 | 536 |
Postretirement Benefits | U.S. equities |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 356 | 465 |
Postretirement Benefits | U.S. equities | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 356 | 465 |
Postretirement Benefits | Non-U.S. equities |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 58 | 71 |
Postretirement Benefits | Non-U.S. equities | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 58 | 71 |
Postretirement Benefits | Index and long/short equity |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 34 | 45 |
Postretirement Benefits | Fixed income |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 528 | 548 |
Postretirement Benefits | Fixed income | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 112 | 136 |
Postretirement Benefits | Fixed income | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 416 | 412 |
Postretirement Benefits | U.S. government securities |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 325 | 341 |
Postretirement Benefits | U.S. government securities | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 112 | 136 |
Postretirement Benefits | U.S. government securities | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 213 | 205 |
Postretirement Benefits | Foreign government agency securities |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 4 | 9 |
Postretirement Benefits | Foreign government agency securities | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 4 | 9 |
Postretirement Benefits | U.S. corporate bonds |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 162 | 159 |
Postretirement Benefits | U.S. corporate bonds | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 162 | 159 |
Postretirement Benefits | Non-U.S. corporate bonds |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 32 | 35 |
Postretirement Benefits | Non-U.S. corporate bonds | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 32 | 35 |
Postretirement Benefits | Derivative instruments |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 4 |
Postretirement Benefits | Derivative instruments | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 4 |
Postretirement Benefits | Private equity |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 103 | 111 |
Postretirement Benefits | Private equity | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2 | 2 |
Postretirement Benefits | Growth equity |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2 | 2 |
Postretirement Benefits | Growth equity | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 2 | 2 |
Postretirement Benefits | Partnership investments |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 101 | 109 |
Postretirement Benefits | Absolute return |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 104 | 95 |
Postretirement Benefits | Absolute return | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1 | 1 |
Postretirement Benefits | Absolute return | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 4 |
Postretirement Benefits | Hedge fund/fund of funds |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 80 | 76 |
Postretirement Benefits | Fixed income and other |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 6 | 5 |
Postretirement Benefits | Fixed income and other | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 1 | 1 |
Postretirement Benefits | Fixed income and other | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 4 |
Postretirement Benefits | Partnership investments - absolute return |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 18 | 14 |
Postretirement Benefits | Cash and Cash Equivalent |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 89 | 72 |
Postretirement Benefits | Cash and Cash Equivalent | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 47 | 34 |
Postretirement Benefits | Cash and Cash Equivalent | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | (19) |
Postretirement Benefits | Cash and cash equivalents |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 52 | 35 |
Postretirement Benefits | Cash and cash equivalents | Level 1 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 47 | 34 |
Postretirement Benefits | Cash and cash equivalents | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | 5 | 1 |
Postretirement Benefits | Repurchase Agreements And Derivative Margin Activity |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | (20) |
Postretirement Benefits | Repurchase Agreements And Derivative Margin Activity | Level 2 |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile |  | (20) |
Postretirement Benefits | Cash and cash equivalents valued at net asset value |  |  |
Benefit Plan Information |  |  |
Total, before other items to reconcile | $ 37 | $ 57 |

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