Employee Benefit Plans - Pension Plan Assets and Benefit Obligations (Details) - Pension Plan - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	$ 6,190	$ 6,112
Projected Benefit Obligation	6,956	6,585
Net Funded Status	(766)	(473)
United States
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	1,528	1,518	$ 2,544
Projected Benefit Obligation	2,389	2,345	3,372
Net Funded Status	(861)	(827)
Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	4,662	4,594	7,252
Projected Benefit Obligation	4,567	4,240	$ 6,543
Net Funded Status	95	354
U.K.
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	2,892	2,903
Projected Benefit Obligation	2,655	2,439
Net Funded Status	237	464
Netherlands
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	839	793
Projected Benefit Obligation	769	729
Net Funded Status	70	64
Canada
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	586	553
Projected Benefit Obligation	562	532
Net Funded Status	24	21
Germany
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	0	0
Projected Benefit Obligation	248	237
Net Funded Status	(248)	(237)
Other
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	345	345
Projected Benefit Obligation	333	303
Net Funded Status	12	42
Funded Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	1,528	1,518
Projected Benefit Obligation	2,146	2,098
Net Funded Status	(618)	(580)
Unfunded Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Pension Plan Assets	0	0
Projected Benefit Obligation	243	247
Net Funded Status	$ (243)	$ (247)