Other Comprehensive (Loss) Income (Components of Other Comprehensive (Loss) Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pre-Tax
Other comprehensive income (loss)	$ 488	$ (366)	$ 284	$ (144)
Tax
Other comprehensive income (loss)	(49)	39	(21)	2
Net of Tax
Other comprehensive income (loss), net of tax	537	(405)	305	(146)
Foreign currency translation adjustments
Pre-Tax
Other comprehensive income (loss), before reclassification	661	(473)	389	(131)
Tax
Other comprehensive income (loss), before reclassification	(7)	12	4	5
Net of Tax
Other comprehensive income (loss), before reclassification	668	(485)	385	(136)
Reclassification from AOCI	0	0	0	0
Other comprehensive income (loss), net of tax	668	(485)	385	(136)
Prior service credits
Pre-Tax
Reclassification from AOCI			(1)	(1)
Tax
Reclassification from AOCI			0	0
Net of Tax
Reclassification from AOCI			(1)	(1)
Net actuarial losses
Pre-Tax
Reclassification from AOCI	6	5	19	15
Tax
Reclassification from AOCI	2	1	5	4
Net of Tax
Reclassification from AOCI	4	4	14	11
Pension/post-retirement plans (losses) gains
Pre-Tax
Reclassification from AOCI	6	5	18	14
Other comprehensive income (loss)	(173)	107	(105)	(13)
Tax
Reclassification from AOCI	2	1	5	4
Other comprehensive income (loss)	(42)	27	(25)	(3)
Net of Tax
Other comprehensive income (loss), before reclassification	(135)	76	(93)	(20)
Reclassification from AOCI	4	4	13	10
Other comprehensive income (loss), net of tax	(131)	80	(80)	(10)
Foreign currency translation adjustments
Pre-Tax
Other comprehensive income (loss), before reclassification	(180)	102	(124)	(20)
Tax
Other comprehensive income (loss), before reclassification	(44)	26	(30)	(5)
Net of Tax
Other comprehensive income (loss), before reclassification	(136)	76	(94)	(15)
Effect of settlement
Pre-Tax
Other comprehensive income (loss), before reclassification	1	0	1	0
Tax
Other comprehensive income (loss), before reclassification	0	0	0	0
Net of Tax
Other comprehensive income (loss), before reclassification	$ 1	$ 0	1	0
Other adjustments
Pre-Tax
Other comprehensive income (loss), before reclassification			0	(7)
Tax
Other comprehensive income (loss), before reclassification			0	(2)
Net of Tax
Other comprehensive income (loss), before reclassification			$ 0	$ (5)