Tax Matters - Reconciliation of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning		$ (4,494)	[1]	$ (6,068)	[1]	$ (5,595)
Acquisitions		(46)		(52)		0
Increases based on tax positions taken during a prior period	[2]	(158)		(67)		(111)
Decreases based on tax positions taken during a prior period	[2],[3]	310		1,339		103
Decreases based on settlements for a prior period	[3],[4]	85		842		24
Increases based on tax positions taken during the current period	[2]	(515)		(701)		(550)
Impact of foreign exchange		(44)		90		22
Other, net	[2],[5]	58		122		40
Balance, ending	[1]	$ (4,802)		$ (4,494)		$ (6,068)

[1] In 2023, included in Income taxes payable ($94 million), Other current assets ($1 million), Noncurrent deferred tax assets and other noncurrent tax assets ($1.3 billion), Noncurrent deferred tax liabilities ($4 million) and Other taxes payable ($3.4 billion). In 2022, included in Income taxes payable ($40 million), Other current assets ($3 million), Noncurrent deferred tax assets and other noncurrent tax assets ($1.2 billion), Noncurrent deferred tax liabilities ($5 million) and Other taxes payable ($3.2 billion).

[2] Primarily included in Provision/(benefit) for taxes on income.

[3] Primarily related to effectively settling certain issues with the U.S. and foreign tax authorities. See Note 5A.

[4] Primarily related to cash payments and reductions of tax attributes.

[5] Primarily related to decreases as a result of a lapse of applicable statutes of limitations.