Retirement Benefits - Fair Value of Plan Assets (Details) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 |
U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan Fair Value Of Plan Assets Dividends And Interest Receivable | $ 363 | $ 360 | |
Defined Benefit Plan, Fair Value of Plan Assets | 41,252 | 44,844 | $ 41,217 |
Net Asset Value Excluded From Fair Value By Input | 6,437 | 6,285 | |
U.S. Plans | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 8,469 | 8,708 | |
U.S. Plans | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 26,324 | 29,803 | |
U.S. Plans | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 22 | 48 | |
U.S. Plans | Equity | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 3,039 | 4,218 | |
Net Asset Value Excluded From Fair Value By Input | 7 | 7 | |
U.S. Plans | Equity | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 3,017 | 4,188 | |
U.S. Plans | Equity | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 14 | 23 | |
U.S. Plans | Equity | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 0 | |
U.S. Plans | U.S. companies | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,939 | 2,680 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | U.S. companies | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,935 | 2,678 | |
U.S. Plans | U.S. companies | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 4 | 2 | |
U.S. Plans | U.S. companies | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | International companies | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,100 | 1,538 | |
Net Asset Value Excluded From Fair Value By Input | 7 | 7 | |
U.S. Plans | International companies | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,082 | 1,510 | |
U.S. Plans | International companies | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 10 | 21 | |
U.S. Plans | International companies | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 0 | |
U.S. Plans | Fixed Income | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 31,665 | 33,231 | |
Net Asset Value Excluded From Fair Value By Input | $ 174 | 200 | |
Defined Benefit Plan, Actual Plan Asset Allocations | 77.00% | | |
U.S. Plans | Fixed Income | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 5,231 | 4,519 | |
U.S. Plans | Fixed Income | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 26,239 | 28,464 | |
U.S. Plans | Fixed Income | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 21 | 48 | |
U.S. Plans | U.S. government | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 5,209 | 4,506 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | U.S. government | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 5,209 | 4,506 | |
U.S. Plans | U.S. government | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | U.S. government | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | U.S. government-sponsored enterprises | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 3,106 | 4,047 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | U.S. government-sponsored enterprises | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | U.S. government-sponsored enterprises | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 3,106 | 4,047 | |
U.S. Plans | U.S. government-sponsored enterprises | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Non-U.S. government | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,588 | 1,842 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | Non-U.S. government | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Non-U.S. government | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,588 | 1,842 | |
U.S. Plans | Non-U.S. government | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Investment grade | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 18,687 | 18,052 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | Investment grade | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Investment grade | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 18,687 | 18,052 | |
U.S. Plans | Investment grade | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | High yield | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,585 | 3,258 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | High yield | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | High yield | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,576 | 3,258 | |
U.S. Plans | High yield | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 9 | 0 | |
U.S. Plans | Other credit | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 412 | 195 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | Other credit | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Other credit | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 412 | 181 | |
U.S. Plans | Other credit | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 14 | |
U.S. Plans | Mortgage/other asset-backed | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,113 | 1,324 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | Mortgage/other asset-backed | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Mortgage/other asset-backed | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,101 | 1,290 | |
U.S. Plans | Mortgage/other asset-backed | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 12 | 34 | |
U.S. Plans | Commingled funds | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 174 | 200 | |
Net Asset Value Excluded From Fair Value By Input | 174 | 200 | |
U.S. Plans | Commingled funds | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Commingled funds | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Commingled funds | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Fixed Income Funds Net Derivative Financial Instruments [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | (209) | (193) | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | Fixed Income Funds Net Derivative Financial Instruments [Member] | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 22 | 13 | |
U.S. Plans | Fixed Income Funds Net Derivative Financial Instruments [Member] | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | (231) | (206) | |
U.S. Plans | Fixed Income Funds Net Derivative Financial Instruments [Member] | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Alternatives | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 6,451 | 6,166 | |
Net Asset Value Excluded From Fair Value By Input | 6,256 | 6,078 | |
U.S. Plans | Alternatives | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 1 | |
U.S. Plans | Alternatives | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 195 | 87 | |
U.S. Plans | Alternatives | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Hedge funds | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 2,723 | 2,559 | |
Net Asset Value Excluded From Fair Value By Input | 2,548 | 2,475 | |
U.S. Plans | Hedge funds | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Hedge funds | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 175 | 84 | |
U.S. Plans | Hedge funds | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 0 | $ 0 | |
U.S. Plans | Hedge Funds Global Macro [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 34.00% | 28.00% | |
U.S. Plans | Hedge Funds, Event Driven [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 20.00% | 26.00% | |
U.S. Plans | Hedge Funds, Equity Long (Short) [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 24.00% | 26.00% | |
U.S. Plans | Hedge Funds Relative Value [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 3.00% | 7.00% | |
U.S. Plans | Hedge Funds, Multi-strategy [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 19.00% | 14.00% | |
U.S. Plans | Private equity | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 2,745 | $ 2,784 | |
Net Asset Value Excluded From Fair Value By Input | 2,745 | 2,782 | |
U.S. Plans | Private equity | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 1 | |
U.S. Plans | Private equity | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 1 | |
U.S. Plans | Private equity | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 0 | $ 0 | |
U.S. Plans | Private Equity Funds Buyout [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 59.00% | 62.00% | |
U.S. Plans | Private Equity Funds Venture Capital [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 31.00% | 27.00% | |
U.S. Plans | Private Equity Funds Mezzanine Distressed [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 5.00% | 6.00% | |
U.S. Plans | Private Equity Funds Other [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 5.00% | 5.00% | |
U.S. Plans | Real estate | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 983 | $ 823 | |
Net Asset Value Excluded From Fair Value By Input | 963 | 821 | |
U.S. Plans | Real estate | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Real estate | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 20 | 2 | |
U.S. Plans | Real estate | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 0 | $ 0 | |
U.S. Plans | Real Estate Core [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 42.00% | 42.00% | |
U.S. Plans | Real Estate Value Added and Opportunistic [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 58.00% | 58.00% | |
U.S. Plans | Cash and cash equivalents | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 1,324 | $ 1,374 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | Cash and cash equivalents | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 221 | 0 | |
U.S. Plans | Cash and cash equivalents | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,103 | 1,374 | |
U.S. Plans | Cash and cash equivalents | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Other | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | (1,227) | (145) | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
U.S. Plans | Other | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Plans | Other | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | (1,227) | (145) | |
U.S. Plans | Other | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan Fair Value Of Plan Assets Dividends And Interest Receivable | 94 | 112 | |
Defined Benefit Plan, Fair Value of Plan Assets | 25,141 | 25,675 | $ 23,843 |
Net Asset Value Excluded From Fair Value By Input | 3,570 | 3,628 | |
Non-U.S. Plans | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 3,076 | 4,121 | |
Non-U.S. Plans | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 13,238 | 13,201 | |
Non-U.S. Plans | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 5,257 | 4,725 | |
Non-U.S. Plans | Equity | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 3,346 | 4,374 | |
Net Asset Value Excluded From Fair Value By Input | 115 | 174 | |
Non-U.S. Plans | Equity | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 2,937 | 4,029 | |
Non-U.S. Plans | Equity | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 293 | 171 | |
Non-U.S. Plans | Equity | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 0 | |
Non-U.S. Plans | U.S. companies | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,734 | 2,268 | |
Net Asset Value Excluded From Fair Value By Input | 86 | 149 | |
Non-U.S. Plans | U.S. companies | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,647 | 2,119 | |
Non-U.S. Plans | U.S. companies | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 0 | |
Non-U.S. Plans | U.S. companies | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | International companies | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,612 | 2,106 | |
Net Asset Value Excluded From Fair Value By Input | 29 | 25 | |
Non-U.S. Plans | International companies | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,290 | 1,910 | |
Non-U.S. Plans | International companies | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 292 | 171 | |
Non-U.S. Plans | International companies | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 0 | |
Non-U.S. Plans | Fixed Income | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 13,971 | 13,979 | |
Net Asset Value Excluded From Fair Value By Input | 379 | 489 | |
Non-U.S. Plans | Fixed Income | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 139 | 92 | |
Non-U.S. Plans | Fixed Income | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 13,453 | 13,398 | |
Non-U.S. Plans | Fixed Income | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | U.S. government | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 138 | 92 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | U.S. government | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 138 | 92 | |
Non-U.S. Plans | U.S. government | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | U.S. government | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | U.S. government-sponsored enterprises | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 10 | 24 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | U.S. government-sponsored enterprises | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | U.S. government-sponsored enterprises | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 10 | 24 | |
Non-U.S. Plans | U.S. government-sponsored enterprises | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Non-U.S. government | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 10,650 | 10,727 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | Non-U.S. government | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Non-U.S. government | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 10,650 | 10,727 | |
Non-U.S. Plans | Non-U.S. government | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Investment grade | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 2,027 | 1,741 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | Investment grade | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Investment grade | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 2,027 | 1,741 | |
Non-U.S. Plans | Investment grade | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | High yield | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 539 | 472 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | High yield | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | High yield | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 539 | 472 | |
Non-U.S. Plans | High yield | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Other credit | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 65 | 81 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | Other credit | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Other credit | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 65 | 81 | |
Non-U.S. Plans | Other credit | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Mortgage/other asset-backed | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 292 | 230 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | Mortgage/other asset-backed | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Mortgage/other asset-backed | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 292 | 230 | |
Non-U.S. Plans | Mortgage/other asset-backed | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Commingled funds | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 379 | 616 | |
Net Asset Value Excluded From Fair Value By Input | 379 | 489 | |
Non-U.S. Plans | Commingled funds | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Commingled funds | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 127 | |
Non-U.S. Plans | Commingled funds | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Fixed Income Funds Net Derivative Financial Instruments [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | (129) | (4) | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | Fixed Income Funds Net Derivative Financial Instruments [Member] | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 0 | |
Non-U.S. Plans | Fixed Income Funds Net Derivative Financial Instruments [Member] | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | (130) | (4) | |
Non-U.S. Plans | Fixed Income Funds Net Derivative Financial Instruments [Member] | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Alternatives | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 3,185 | 3,054 | |
Net Asset Value Excluded From Fair Value By Input | 3,076 | 2,965 | |
Non-U.S. Plans | Alternatives | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Alternatives | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 109 | 89 | |
Non-U.S. Plans | Alternatives | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Hedge funds | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1,870 | 1,837 | |
Net Asset Value Excluded From Fair Value By Input | 1,762 | 1,749 | |
Non-U.S. Plans | Hedge funds | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Hedge funds | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 108 | 88 | |
Non-U.S. Plans | Hedge funds | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Private equity | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 633 | 538 | |
Net Asset Value Excluded From Fair Value By Input | 633 | 538 | |
Non-U.S. Plans | Private equity | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Private equity | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Private equity | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Real estate | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 682 | 679 | |
Net Asset Value Excluded From Fair Value By Input | 681 | 678 | |
Non-U.S. Plans | Real estate | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Real estate | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | 1 | |
Non-U.S. Plans | Real estate | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 0 | $ 0 | |
Non-U.S. Plans | Real Estate Core [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 41.00% | 39.00% | |
Non-U.S. Plans | Real Estate Value Added and Opportunistic [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 59.00% | 61.00% | |
Non-U.S. Plans | Cash and cash equivalents | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 556 | $ 656 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | Cash and cash equivalents | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Cash and cash equivalents | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 556 | 656 | |
Non-U.S. Plans | Cash and cash equivalents | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Other | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 4,083 | 3,612 | |
Net Asset Value Excluded From Fair Value By Input | 0 | 0 | |
Non-U.S. Plans | Other | Level 1 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Non-U.S. Plans | Other | Level 2 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | (1,173) | (1,113) | |
Non-U.S. Plans | Other | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 5,256 | $ 4,725 | |
United Kingdom and Canadian [Member] | Hedge Funds Global Macro [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 17.00% | 13.00% | |
United Kingdom and Canadian [Member] | Hedge Funds, Event Driven [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 26.00% | 33.00% | |
United Kingdom and Canadian [Member] | Hedge Funds, Equity Long (Short) [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 38.00% | 39.00% | |
United Kingdom and Canadian [Member] | Hedge Funds Relative Value [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 7.00% | 5.00% | |
United Kingdom and Canadian [Member] | Hedge Funds, Multi-strategy [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Actual Plan Asset Allocations | 12.00% | 10.00% | |
Ford Werke GmbH [Member] | Non-U.S. Plans | Other Pension Benefit Plan Asset Insurance Contracts [Member] | Level 3 [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 4,400 | $ 3,800 | |