Employee Benefits - Schedule of plan assets based on the level within the fair value hierarchy in which the fair value measurement falls (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	$ 3,228	$ 3,345	$ 4,746
Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	734	731	996
Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	232	244
Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	212	194
Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	2,468	2,501
Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	384	403
Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	11	20	25
Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	138	134	171
Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	2,711	2,765
Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	734	731
Cash and cash equivalents | Cash and Cash Equivalents | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	54	119
Cash and cash equivalents | Cash and Cash Equivalents | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	108	64
Cash and cash equivalents | Cash and Cash Equivalents | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Cash and cash equivalents | Cash and Cash Equivalents | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Cash and cash equivalents | Cash and Cash Equivalents | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Cash and cash equivalents | Cash and Cash Equivalents | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Cash and cash equivalents | Cash and Cash Equivalents | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	54	119
Cash and cash equivalents | Cash and Cash Equivalents | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	108	64
U.S. | U.S. | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	140	90
U.S. | U.S. | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. | U.S. | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. | U.S. | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. | U.S. | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. | U.S. | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. | U.S. | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	140	90
U.S. | U.S. | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
International | U.S. | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	4	5
International | U.S. | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	104	130
International | U.S. | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
International | U.S. | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	35	44
International | U.S. | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
International | U.S. | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
International | U.S. | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	4	5
International | U.S. | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	139	174
U.S. investment grade | Fixed maturity securities | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	24	45
U.S. investment grade | Fixed maturity securities | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. investment grade | Fixed maturity securities | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	2,230	2,213
U.S. investment grade | Fixed maturity securities | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. investment grade | Fixed maturity securities | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	10	10	16
U.S. investment grade | Fixed maturity securities | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. investment grade | Fixed maturity securities | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	2,264	2,268
U.S. investment grade | Fixed maturity securities | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
International investment grade | Fixed maturity securities | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
International investment grade | Fixed maturity securities | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
International investment grade | Fixed maturity securities | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	125	177
International investment grade | Fixed maturity securities | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	138	140
International investment grade | Fixed maturity securities | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
International investment grade | Fixed maturity securities | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
International investment grade | Fixed maturity securities | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	125	177
International investment grade | Fixed maturity securities | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	138	140
U.S. and international high yield | Fixed maturity securities | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. and international high yield | Fixed maturity securities | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. and international high yield | Fixed maturity securities | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	33	58
U.S. and international high yield | Fixed maturity securities | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	192	184
U.S. and international high yield | Fixed maturity securities | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. and international high yield | Fixed maturity securities | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
U.S. and international high yield | Fixed maturity securities | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	33	58
U.S. and international high yield | Fixed maturity securities | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	192	184
Mortgage and other asset-backed securities | Fixed maturity securities | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mortgage and other asset-backed securities | Fixed maturity securities | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mortgage and other asset-backed securities | Fixed maturity securities | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	59	43
Mortgage and other asset-backed securities | Fixed maturity securities | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mortgage and other asset-backed securities | Fixed maturity securities | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	1	5	1
Mortgage and other asset-backed securities | Fixed maturity securities | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mortgage and other asset-backed securities | Fixed maturity securities | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	60	48
Mortgage and other asset-backed securities | Fixed maturity securities | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Other fixed maturity securities | Other fixed maturity securities | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	12
Other fixed maturity securities | Other fixed maturity securities | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	12
Futures | Other investments | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	10	(15)
Futures | Other investments | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Futures | Other investments | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Futures | Other investments | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Futures | Other investments | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Futures | Other investments | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Futures | Other investments | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	10	(15)
Futures | Other investments | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Direct private equity | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	5	$ 8
Direct private equity | Other investments | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount		0
Direct private equity | Other investments | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount		0
Direct private equity | Other investments | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount		0
Direct private equity | Other investments | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount		0
Direct private equity | Other investments | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount		5
Direct private equity | Other investments | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount		0
Direct private equity | Other investments | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount		5
Direct private equity | Other investments | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount		0
Insurance contracts | Other investments | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Insurance contracts | Other investments | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Insurance contracts | Other investments | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	9	10
Insurance contracts | Other investments | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Insurance contracts | Other investments | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Insurance contracts | Other investments | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	138	134
Insurance contracts | Other investments | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	9	10
Insurance contracts | Other investments | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	138	134
Mutual funds | Other investments | Level 1 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mutual funds | Other investments | Level 1 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mutual funds | Other investments | Level 2 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mutual funds | Other investments | Level 2 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	19	35
Mutual funds | Other investments | Level 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mutual funds | Other investments | Level 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mutual funds | Other investments | Levels 1, 2 and 3 | U.S. Plans | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	0	0
Mutual funds | Other investments | Levels 1, 2 and 3 | Foreign Plan | Pension
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	19	35
Other Investment Types | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan, Plan Assets, Category [Line Items]
Defined benefit plan, plan assets, amount	$ 517	$ 580