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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Fair Values of U.S. Pension and Postretirement Benefit Plan Assets by Asset Category as Well as the Percentage That Each Category Comprises of Total Plan Assets and the Respective Target Allocations (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 47,767 | $ 40,864 |
Plan assets target allocation | 100.00% | 100.00% |
Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 24,161 | $ 20,696 |
Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 15,876 | 12,723 |
Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12 | 6 |
Fair Value, Inputs, Level 3 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 2 | $ 8
Fair Value, Inputs, Level 3 | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12 | 4 | 0
Fair Value, Inputs, Level 3 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12 | $ 6 | $ 8
Minimum | Other Pension Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Postretirement medical plans service minimum eligibility year |  | 10 years |
United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 46,209 | $ 39,580 |
Percentage of Plan Assets | 100.00% | 100.00% |
United States | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 964 | $ 157 |
Percentage of Plan Assets | 2.10% | 0.40% |
United States | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 23,787 | $ 20,404 |
United States | Fair Value, Inputs, Level 1 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 818 | 108 |
United States | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 14,769 | 11,793 |
United States | Fair Value, Inputs, Level 2 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 146 | 49 |
United States | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 2 |
United States | Fair Value, Inputs, Level 3 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
United States | Minimum | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 1.00% |
United States | Maximum | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 5.00% | 5.00% |
United States | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 16,634 | $ 13,667 |
Percentage of Plan Assets | 36.00% | 34.50% |
United States | Equity securities | U.S. Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 6,607 | $ 5,276 |
United States | Equity securities | U.S. Small Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 505 | 542 |
United States | Equity securities | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,039 | 1,859 |
United States | Equity securities | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,892 | 2,320 |
United States | Equity securities | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4,591 | 3,670 |
United States | Equity securities | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 9,840 | 8,222 |
United States | Equity securities | Fair Value, Inputs, Level 1 | U.S. Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,889 | 2,155 |
United States | Equity securities | Fair Value, Inputs, Level 1 | U.S. Small Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 376 | 386 |
United States | Equity securities | Fair Value, Inputs, Level 1 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,523 | 1,436 |
United States | Equity securities | Fair Value, Inputs, Level 1 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,553 | 2,056 |
United States | Equity securities | Fair Value, Inputs, Level 1 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,499 | 2,189 |
United States | Equity securities | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 6,794 | 5,445 |
United States | Equity securities | Fair Value, Inputs, Level 2 | U.S. Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3,718 | 3,121 |
United States | Equity securities | Fair Value, Inputs, Level 2 | U.S. Small Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 129 | 156 |
United States | Equity securities | Fair Value, Inputs, Level 2 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 516 | 423 |
United States | Equity securities | Fair Value, Inputs, Level 2 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 339 | 264 |
United States | Equity securities | Fair Value, Inputs, Level 2 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,092 | 1,481 |
United States | Equity securities | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Equity securities | Fair Value, Inputs, Level 3 | U.S. Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Equity securities | Fair Value, Inputs, Level 3 | U.S. Small Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Equity securities | Fair Value, Inputs, Level 3 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Equity securities | Fair Value, Inputs, Level 3 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Equity securities | Fair Value, Inputs, Level 3 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
United States | Equity securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 25.00% | 25.00% |
United States | Equity securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 55.00% | 55.00% |
United States | Fixed Income Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 19,202 | $ 16,669 |
Percentage of Plan Assets | 41.50% | 42.10% |
United States | Fixed Income Securities | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 50 | $ 55 |
United States | Fixed Income Securities | U.S. Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 14,077 | 12,295 |
United States | Fixed Income Securities | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 5,051 | 4,303 |
United States | Fixed Income Securities | Municipal Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 24 | 16 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12,980 | 11,922 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 1 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 1 | U.S. Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12,980 | 11,922 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 1 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 1 | Municipal Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 6,222 | 4,745 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 2 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 50 | 55 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 2 | U.S. Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,097 | 373 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 2 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 5,051 | 4,301 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 2 | Municipal Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 24 | 16 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 2 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 3 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 3 | U.S. Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 3 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 2 |
United States | Fixed Income Securities | Fair Value, Inputs, Level 3 | Municipal Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
United States | Fixed Income Securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 35.00% | 35.00% |
United States | Fixed Income Securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 55.00% | 55.00% |
United States | Other Investments [Member] | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 3,273 | $ 3,154 |
Percentage of Plan Assets | 7.10% | 8.00% |
United States | Other Investments [Member] | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 3,030 | $ 2,763 |
Percentage of Plan Assets | 6.60% | 7.00% |
United States | Other Investments [Member] | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 772 | $ 836 |
Percentage of Plan Assets | 1.70% | 2.10% |
United States | Other Investments [Member] | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,940 | $ 1,989 |
Percentage of Plan Assets | 4.20% | 5.00% |
United States | Other Investments [Member] | Risk Parity Funds [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 241 | $ 207 |
Percentage of Plan Assets | 0.50% | 0.50% |
United States | Other Investments [Member] | Asset-backed Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 138 |
Percentage of Plan Assets |  | 0.40% |
United States | Other Investments [Member] | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 153 |  |
Percentage of Plan Assets | 0.30% |  |
United States | Other Investments [Member] | Fair Value, Inputs, Level 1 | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 1 | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 1 | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 1 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 149 | 152 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 1 | Risk Parity Funds [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 1 | Asset-backed Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 1 | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 |  |
United States | Other Investments [Member] | Fair Value, Inputs, Level 2 | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,380 | 1,185 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 2 | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 2 | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 178 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 2 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 74 | 53 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 2 | Risk Parity Funds [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 2 | Asset-backed Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 138 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 2 | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 153 |  |
United States | Other Investments [Member] | Fair Value, Inputs, Level 3 | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 3 | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 3 | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 3 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 3 | Risk Parity Funds [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 3 | Asset-backed Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 0 |
United States | Other Investments [Member] | Fair Value, Inputs, Level 3 | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 |  |
United States | Other Investments [Member] | Minimum | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 5.00% | 5.00% |
United States | Other Investments [Member] | Minimum | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 1.00% |
United States | Other Investments [Member] | Minimum | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% |  |
United States | Other Investments [Member] | Minimum | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 1.00% |
United States | Other Investments [Member] | Minimum | Risk Parity Funds [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 1.00% |
United States | Other Investments [Member] | Minimum | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 1.00% |
United States | Other Investments [Member] | Maximum | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 15.00% | 15.00% |
United States | Other Investments [Member] | Maximum | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
United States | Other Investments [Member] | Maximum | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% |  |
United States | Other Investments [Member] | Maximum | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
United States | Other Investments [Member] | Maximum | Risk Parity Funds [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
United States | Other Investments [Member] | Maximum | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 5.00% | 5.00% |
International Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,558 | $ 1,284 |
Percentage of Plan Assets | 100.00% | 100.00% |
International Pension Benefits | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 72 | $ 45 |
Percentage of Plan Assets | 4.60% | 3.50% |
International Pension Benefits | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 374 | $ 292 |
International Pension Benefits | Fair Value, Inputs, Level 1 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 32 | 4 |
International Pension Benefits | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,107 | 930 |
International Pension Benefits | Fair Value, Inputs, Level 2 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 40 | 41 |
International Pension Benefits | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12 | 4 |
International Pension Benefits | Fair Value, Inputs, Level 3 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
International Pension Benefits | Minimum | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 1.00% |
International Pension Benefits | Maximum | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
International Pension Benefits | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 730 | $ 586 |
Percentage of Plan Assets | 46.80% | 45.60% |
International Pension Benefits | Equity securities | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 33 | $ 33 |
International Pension Benefits | Equity securities | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 441 | 348 |
International Pension Benefits | Equity securities | local market equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 209 | 171 |
International Pension Benefits | Equity securities | U.S. Equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 47 | 34 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 212 | 183 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 1 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 33 | 33 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 1 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 179 | 150 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 1 | local market equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 1 | U.S. Equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 518 | 403 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 2 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 2 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 262 | 198 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 2 | local market equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 209 | 171 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 2 | U.S. Equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 47 | 34 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 3 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 3 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 3 | local market equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Equity securities | Fair Value, Inputs, Level 3 | U.S. Equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
International Pension Benefits | Equity securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 30.00% | 30.00% |
International Pension Benefits | Equity securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 60.00% | 60.00% |
International Pension Benefits | Fixed Income Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 381 | $ 324 |
Percentage of Plan Assets | 24.50% | 25.20% |
International Pension Benefits | Fixed Income Securities | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 177 | $ 195 |
International Pension Benefits | Fixed Income Securities | Global Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 110 | 27 |
International Pension Benefits | Fixed Income Securities | Foreign Government Debt [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 94 | 102 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 130 | 105 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 1 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 20 | 54 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 1 | Global Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 110 | 27 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 1 | Foreign Government Debt [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 24 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 251 | 219 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 2 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 157 | 141 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 2 | Global Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 2 | Foreign Government Debt [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 94 | 78 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 3 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 3 | Global Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Fixed Income Securities | Fair Value, Inputs, Level 3 | Foreign Government Debt [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
International Pension Benefits | Fixed Income Securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 25.00% | 25.00% |
International Pension Benefits | Fixed Income Securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 45.00% | 45.00% |
International Pension Benefits | Other Investments [Member] | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 128 | $ 121 |
Percentage of Plan Assets | 8.20% | 9.40% |
International Pension Benefits | Other Investments [Member] | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 247 | $ 208 |
Percentage of Plan Assets | 15.90% | 16.30% |
International Pension Benefits | Other Investments [Member] | Fair Value, Inputs, Level 1 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
International Pension Benefits | Other Investments [Member] | Fair Value, Inputs, Level 1 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Other Investments [Member] | Fair Value, Inputs, Level 2 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 80 | 76 |
International Pension Benefits | Other Investments [Member] | Fair Value, Inputs, Level 2 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 218 | 191 |
International Pension Benefits | Other Investments [Member] | Fair Value, Inputs, Level 3 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Pension Benefits | Other Investments [Member] | Fair Value, Inputs, Level 3 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 12 | $ 4 |
International Pension Benefits | Other Investments [Member] | Minimum | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 5.00% | 5.00% |
International Pension Benefits | Other Investments [Member] | Minimum | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 0.00% | 1.00% |
International Pension Benefits | Other Investments [Member] | Maximum | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
International Pension Benefits | Other Investments [Member] | Maximum | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 2.00% |

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