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Pension And Other Postretirement Benefits (Assets Recorded In Balance Sheet And Other Comprehensive Income) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Postretirement benefits reserves | $ (9,700) | $ (10,496)
Other Postretirement Benefits [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Balance at December 31 | (4,427) | (4,643)
Current liabilities | (283) | (288)
Postretirement benefits reserves | (4,144) | (4,355)
Total recorded | (4,427) | (4,643)
Net actuarial loss/(gain) | (1,421) | (1,453)
Prior service cost | (405) | (459)
Total recorded in accumulated other comprehensive income | (1,826) | (1,912)
United States |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Balance at December 31 | (1,755) | (1,776)
Total recorded | (1,755) | (1,776)
United States | Pension Plans, Defined Benefit [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Balance at December 31 | (1,755) | (1,776)
Other assets | 2 | 0
Current liabilities | (213) | (201)
Postretirement benefits reserves | (1,544) | (1,575)
Total recorded | (1,755) | (1,776)
Net actuarial loss/(gain) | 631 | 744
Prior service cost | (252) | (283)
Total recorded in accumulated other comprehensive income | 379 | 461
Pension Benefits - Non-U.S. [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Balance at December 31 | (1,820) | (2,896)
Total recorded | (1,820) | (2,896)
Pension Benefits - Non-U.S. [Member] | Pension Plans, Defined Benefit [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Balance at December 31 | (1,820) | (2,896)
Other assets | 2,399 | 1,895
Current liabilities | (207) | (225)
Postretirement benefits reserves | (4,012) | (4,566)
Total recorded | (1,820) | (2,896)
Net actuarial loss/(gain) | 557 | 1,364
Prior service cost | 420 | 401
Total recorded in accumulated other comprehensive income | $ 977 | $ 1,765

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