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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, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 40,864 | $ 43,448 |
Plan assets target allocation | 100.00% | 100.00% |
Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 20,696 | $ 23,664 |
Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12,723 | 12,926 |
Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 6 | 8 |
Fair Value, Inputs, Level 3 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | 8 | $ 0
Fair Value, Inputs, Level 3 | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4 | 0 | 0
Fair Value, Inputs, Level 3 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 6 | 8 | $ 0
Domestic |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 39,580 | $ 42,115 |
Percentage of Plan Assets | 100.00% | 100.00% |
Domestic | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 157 | $ 5,725 |
Percentage of Plan Assets | 0.40% | 13.60% |
Domestic | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 20,404 | $ 23,333 |
Domestic | Fair Value, Inputs, Level 1 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 108 | 5,292 |
Domestic | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 11,793 | 11,978 |
Domestic | Fair Value, Inputs, Level 2 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 49 | 433 |
Domestic | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | 8 |
Domestic | Fair Value, Inputs, Level 3 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
Domestic | Minimum | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 0.00% | 0.00% |
Domestic | Maximum | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 5.00% | 5.00% |
Domestic | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 13,667 | $ 16,224 |
Percentage of Plan Assets | 34.50% | 38.50% |
Domestic | Equity securities | U.S. Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 5,276 | $ 5,924 |
Domestic | Equity securities | U.S. Small Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 542 | 591 |
Domestic | Equity securities | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,859 | 2,101 |
Domestic | Equity securities | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,320 | 2,817 |
Domestic | Equity securities | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3,670 | 4,791 |
Domestic | Equity securities | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 8,222 | 10,561 |
Domestic | Equity securities | Fair Value, Inputs, Level 1 | U.S. Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,155 | 3,121 |
Domestic | Equity securities | Fair Value, Inputs, Level 1 | U.S. Small Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 386 | 421 |
Domestic | Equity securities | Fair Value, Inputs, Level 1 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,436 | 1,669 |
Domestic | Equity securities | Fair Value, Inputs, Level 1 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,056 | 2,400 |
Domestic | Equity securities | Fair Value, Inputs, Level 1 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2,189 | 2,950 |
Domestic | Equity securities | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 5,445 | 5,663 |
Domestic | Equity securities | Fair Value, Inputs, Level 2 | U.S. Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3,121 | 2,803 |
Domestic | Equity securities | Fair Value, Inputs, Level 2 | U.S. Small Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 156 | 170 |
Domestic | Equity securities | Fair Value, Inputs, Level 2 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 423 | 432 |
Domestic | Equity securities | Fair Value, Inputs, Level 2 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 264 | 417 |
Domestic | Equity securities | Fair Value, Inputs, Level 2 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,481 | 1,841 |
Domestic | Equity securities | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Equity securities | Fair Value, Inputs, Level 3 | U.S. Large Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Equity securities | Fair Value, Inputs, Level 3 | U.S. Small Cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Equity securities | Fair Value, Inputs, Level 3 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Equity securities | Fair Value, Inputs, Level 3 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Equity securities | Fair Value, Inputs, Level 3 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
Domestic | Equity securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 25.00% | 35.00% |
Domestic | Equity securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 55.00% | 55.00% |
Domestic | Fixed Income Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 16,669 | $ 11,634 |
Percentage of Plan Assets | 42.10% | 27.60% |
Domestic | Fixed Income Securities | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 55 | $ 53 |
Domestic | Fixed Income Securities | U.S. Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12,295 | 7,695 |
Domestic | Fixed Income Securities | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4,303 | 3,865 |
Domestic | Fixed Income Securities | Municipal Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 16 | 21 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 11,922 | 7,323 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1 | U.S. Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 11,922 | 7,323 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 1 | Municipal Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4,745 | 4,303 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 55 | 53 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2 | U.S. Government Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 373 | 372 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4,301 | 3,857 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 2 | Municipal Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 16 | 21 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | 8 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 3 | Global Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | 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 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 3 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 2 | 8 |
Domestic | Fixed Income Securities | Fair Value, Inputs, Level 3 | Municipal Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
Domestic | Fixed Income Securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 35.00% | 25.00% |
Domestic | Fixed Income Securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 55.00% | 35.00% |
Domestic | Other Investments [Member] | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 3,154 | $ 2,910 |
Percentage of Plan Assets | 8.00% | 6.90% |
Domestic | Other Investments [Member] | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 2,763 | $ 2,107 |
Percentage of Plan Assets | 7.00% | 5.00% |
Domestic | Other Investments [Member] | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 836 | $ 953 |
Percentage of Plan Assets | 2.10% | 2.30% |
Domestic | Other Investments [Member] | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,989 | $ 2,031 |
Percentage of Plan Assets | 5.00% | 4.80% |
Domestic | Other Investments [Member] | Risk Parity Funds [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 207 | $ 359 |
Percentage of Plan Assets | 0.50% | 0.90% |
Domestic | Other Investments [Member] | Asset-backed Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 172 |
Percentage of Plan Assets |  | 0.40% |
Domestic | Other Investments [Member] | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 138 |  |
Percentage of Plan Assets | 0.40% |  |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 152 | 157 |
Domestic | 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 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Asset-backed Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 0 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 1 | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 |  |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,185 | 1,031 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 178 | 237 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 53 | 139 |
Domestic | 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 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Asset-backed Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | 172 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 2 | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 138 |  |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Private Debt |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Domestic | 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 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Asset-backed Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets |  | $ 0 |
Domestic | Other Investments [Member] | Fair Value, Inputs, Level 3 | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 |  |
Domestic | Other Investments [Member] | Minimum | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 5.00% | 5.00% |
Domestic | Other Investments [Member] | Minimum | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 1.00% |
Domestic | Other Investments [Member] | Minimum | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 1.00% |
Domestic | Other Investments [Member] | Minimum | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 1.00% |
Domestic | Other Investments [Member] | Minimum | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 0.00% |
Domestic | Other Investments [Member] | Maximum | Hedge Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 15.00% | 15.00% |
Domestic | Other Investments [Member] | Maximum | Private Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
Domestic | Other Investments [Member] | Maximum | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
Domestic | Other Investments [Member] | Maximum | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
Domestic | Other Investments [Member] | Maximum | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 5.00% | 5.00% |
International Package |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 1,284 | $ 1,333 |
Percentage of Plan Assets | 100.00% | 100.00% |
International Package | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 45 | $ 78 |
Percentage of Plan Assets | 3.50% | 5.80% |
International Package | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 292 | $ 331 |
International Package | Fair Value, Inputs, Level 1 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4 | 43 |
International Package | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 930 | 948 |
International Package | Fair Value, Inputs, Level 2 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 41 | 35 |
International Package | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4 | 0 |
International Package | Fair Value, Inputs, Level 3 | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
International Package | Minimum | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 0.00% |
International Package | Maximum | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
International Package | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 586 | $ 637 |
Percentage of Plan Assets | 45.60% | 47.70% |
International Package | Equity securities | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 33 | $ 38 |
International Package | Equity securities | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 348 | 356 |
International Package | Equity securities | local market equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 171 | 213 |
International Package | Equity securities | U.S. Equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 34 | 30 |
International Package | Equity securities | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 183 | 204 |
International Package | Equity securities | Fair Value, Inputs, Level 1 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 33 | 38 |
International Package | Equity securities | Fair Value, Inputs, Level 1 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 150 | 166 |
International Package | 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 Package | 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 Package | Equity securities | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 403 | 433 |
International Package | Equity securities | Fair Value, Inputs, Level 2 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Package | Equity securities | Fair Value, Inputs, Level 2 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 198 | 190 |
International Package | Equity securities | Fair Value, Inputs, Level 2 | local market equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 171 | 213 |
International Package | Equity securities | Fair Value, Inputs, Level 2 | U.S. Equity [Domain] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 34 | 30 |
International Package | Equity securities | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Package | Equity securities | Fair Value, Inputs, Level 3 | Emerging Markets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Package | Equity securities | Fair Value, Inputs, Level 3 | International Equity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Package | 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 Package | 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 Package | Equity securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 30.00% | 30.00% |
International Package | Equity securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 60.00% | 60.00% |
International Package | Fixed Income Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 324 | $ 301 |
Percentage of Plan Assets | 25.20% | 22.60% |
International Package | Fixed Income Securities | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 195 | $ 198 |
International Package | Fixed Income Securities | Foreign Government Debt [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 102 | 103 |
International Package | Fixed Income Securities | Fair Value, Inputs, Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 105 | 84 |
International Package | Fixed Income Securities | Fair Value, Inputs, Level 1 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 54 | 59 |
International Package | Fixed Income Securities | Fair Value, Inputs, Level 1 | Foreign Government Debt [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 24 | 25 |
International Package | Fixed Income Securities | Fair Value, Inputs, Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 219 | 217 |
International Package | Fixed Income Securities | Fair Value, Inputs, Level 2 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 141 | 139 |
International Package | Fixed Income Securities | Fair Value, Inputs, Level 2 | Foreign Government Debt [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 78 | 78 |
International Package | Fixed Income Securities | Fair Value, Inputs, Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Package | Fixed Income Securities | Fair Value, Inputs, Level 3 | Corporate Bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Package | 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 Package | Fixed Income Securities | Minimum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 25.00% | 25.00% |
International Package | Fixed Income Securities | Maximum |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 45.00% | 50.00% |
International Package | Other Investments [Member] | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 121 | $ 124 |
Percentage of Plan Assets | 9.40% | 9.30% |
International Package | Other Investments [Member] | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 208 | $ 193 |
Percentage of Plan Assets | 16.30% | 14.60% |
International Package | Other Investments [Member] | Fair Value, Inputs, Level 1 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
International Package | Other Investments [Member] | Fair Value, Inputs, Level 1 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Package | Other Investments [Member] | Fair Value, Inputs, Level 2 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 76 | 79 |
International Package | Other Investments [Member] | Fair Value, Inputs, Level 2 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 191 | 184 |
International Package | Other Investments [Member] | Fair Value, Inputs, Level 3 | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
International Package | Other Investments [Member] | Fair Value, Inputs, Level 3 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 4 | $ 0 |
International Package | Other Investments [Member] | Minimum | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 5.00% | 5.00% |
International Package | Other Investments [Member] | Minimum | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 1.00% | 0.00% |
International Package | Other Investments [Member] | Minimum | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 0.00% | 0.00% |
International Package | Other Investments [Member] | Maximum | Structured Products |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 10.00% |
International Package | Other Investments [Member] | Maximum | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 20.00% | 20.00% |
International Package | Other Investments [Member] | Maximum | Structured Products [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets target allocation, Maximum | 10.00% | 0.00% |

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