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Retirement Programs - Pension Plan Asset Fair Value By Category And Level 3 Rollforward (Details) - Pensions - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | $ 7,685 |
Fair value of plan assets, December 31 | 8,228 | $ 7,685
Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 1,759 | 1,740
Gain/(Loss) for the period | (65) | 98
Purchases | 5 | 83
Sales | (59) | (56)
Transfer into / (out of) Level 3 | 0 | 33
Foreign currency translation | 80 | (139)
Fair value of plan assets, December 31 | 1,720 | 1,759
Pool Funds Measured at NAV |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 1,457 |
Fair value of plan assets, December 31 | 1,572 | 1,457
Cash and cash equivalents | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 313 |
Fair value of plan assets, December 31 | 368 | 313
Cash and cash equivalents | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 313 |
Fair value of plan assets, December 31 | 368 | 313
Cash and cash equivalents | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Cash and cash equivalents | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Global equities | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 778 |
Fair value of plan assets, December 31 | 926 | 778
Global equities | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 778 |
Fair value of plan assets, December 31 | 926 | 778
Global equities | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Global equities | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Mutual funds | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 248 |
Fair value of plan assets, December 31 | 298 | 248
Mutual funds | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 248 |
Fair value of plan assets, December 31 | 298 | 248
Mutual funds | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Mutual funds | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Government bonds | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 1,317 |
Fair value of plan assets, December 31 | 1,486 | 1,317
Government bonds | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Government bonds | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 1,317 |
Fair value of plan assets, December 31 | 1,486 | 1,317
Government bonds | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Emerging market debt | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 245 |
Fair value of plan assets, December 31 | 283 | 245
Emerging market debt | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Emerging market debt | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 245 |
Fair value of plan assets, December 31 | 283 | 245
Emerging market debt | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Mutual funds | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 156 |
Fair value of plan assets, December 31 | 179 | 156
Mutual funds | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 101 |
Fair value of plan assets, December 31 | 119 | 101
Mutual funds | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 55 |
Fair value of plan assets, December 31 | 60 | 55
Mutual funds | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Corporate bonds | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 372 |
Fair value of plan assets, December 31 | 324 | 372
Corporate bonds | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Corporate bonds | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 372 |
Fair value of plan assets, December 31 | 324 | 372
Corporate bonds | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Bank loans | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 18 |
Fair value of plan assets, December 31 | 27 | 18
Bank loans | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Bank loans | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 18 |
Fair value of plan assets, December 31 | 27 | 18
Bank loans | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Real estate funds | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 353 |
Fair value of plan assets, December 31 | 324 | 353
Real estate funds | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Real estate funds | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Real estate funds | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 353 | 360
Gain/(Loss) for the period | (27) | 5
Purchases | 3 | 18
Sales | (15) | (22)
Transfer into / (out of) Level 3 | 0 | 0
Foreign currency translation | 10 | (8)
Fair value of plan assets, December 31 | 324 | 353
Private debt | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 1,360 |
Fair value of plan assets, December 31 | 1,345 | 1,360
Private debt | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Private debt | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Private debt | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 1,360 | 1,368
Gain/(Loss) for the period | (38) | 93
Purchases | 1 | 63
Sales | (44) | (34)
Transfer into / (out of) Level 3 | 0 | 0
Foreign currency translation | 66 | (130)
Fair value of plan assets, December 31 | 1,345 | 1,360
Insurance contracts | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 46 |
Fair value of plan assets, December 31 | 51 | 46
Insurance contracts | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Insurance contracts | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Insurance contracts | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 46 | 12
Gain/(Loss) for the period | 0 | 0
Purchases | 1 | 2
Sales | 0 | 0
Transfer into / (out of) Level 3 | 0 | 33
Foreign currency translation | 4 | (1)
Fair value of plan assets, December 31 | 51 | 46
Liquid alternative | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 982 |
Fair value of plan assets, December 31 | 1,022 | 982
Liquid alternative | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Liquid alternative | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 982 |
Fair value of plan assets, December 31 | 1,022 | 982
Liquid alternative | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Other investments | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 40 |
Fair value of plan assets, December 31 | 23 | 40
Other investments | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 1 |
Fair value of plan assets, December 31 | 1 | 1
Other investments | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 39 |
Fair value of plan assets, December 31 | 22 | 39
Other investments | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 0 |
Fair value of plan assets, December 31 | 0 | 0
Total pension assets, by level | Fair Value, Inputs, Level 1, 2 and 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 6,228 |
Fair value of plan assets, December 31 | 6,656 | 6,228
Total pension assets, by level | Level 1 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 1,441 |
Fair value of plan assets, December 31 | 1,712 | 1,441
Total pension assets, by level | Level 2 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 3,028 |
Fair value of plan assets, December 31 | 3,224 | 3,028
Total pension assets, by level | Level 3 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |
Fair value of plan assets, January 1 | 1,759 |
Fair value of plan assets, December 31 | $ 1,720 | $ 1,759

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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount, measured using unobservable input, of decrease in plan asset of defined benefit plan from sale. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(B) -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount, measured using unobservable input, of increase in plan asset of defined benefit plan from purchase. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(B) -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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