Employee Benefit Plans and Postretirement Benefits - Defined Benefit Pension Plans by Geographical Area (Details) - USD ($) $ in Millions		12 Months Ended
	Apr. 16, 2018	Dec. 31, 2024	Dec. 31, 2023
Change in benefit obligations:
Plan amendments	$ 527
Change in the fair value of plan assets:
Beginning plan assets		$ 1,107
Ending plan assets		1,077	$ 1,107
U.S.
Change in benefit obligations:
Beginning benefit obligation		139	128
Service cost		1	2
Interest cost		7	7
Plan participants’ contributions		0	0
Actuarial loss (gain)		0	7
Gross benefits paid		(6)	(5)
Plan amendments		0	0
Currency translation adjustments and other		0	0
Ending benefit obligation		141	139
Change in the fair value of plan assets:
Beginning plan assets		161	159
Actual return on plan assets		6	6
Employer contributions		0	0
Plan participants’ contributions		0	0
Gross benefits paid		(5)	(4)
Currency translation adjustments and other		0	0
Ending plan assets		162	161
Funded status:		21	22
U.K.
Change in benefit obligations:
Beginning benefit obligation		825	770
Service cost		0	0
Interest cost		36	38
Plan participants’ contributions		0	0
Actuarial loss (gain)		(87)	17
Gross benefits paid		(51)	(48)
Plan amendments		16	4
Currency translation adjustments and other		17	44
Ending benefit obligation		756	825
Change in the fair value of plan assets:
Beginning plan assets		707	650
Actual return on plan assets		(13)	36
Employer contributions		25	31
Plan participants’ contributions		0	0
Gross benefits paid		(52)	(48)
Currency translation adjustments and other		16	38
Ending plan assets		683	707
Funded status:		(73)	(118)
Germany
Change in benefit obligations:
Beginning benefit obligation		117	108
Service cost		0	0
Interest cost		3	4
Plan participants’ contributions		0	0
Actuarial loss (gain)		(5)	12
Gross benefits paid		(11)	(11)
Plan amendments		0	0
Currency translation adjustments and other		(6)	4
Ending benefit obligation		98	117
Change in the fair value of plan assets:
Beginning plan assets		4	4
Actual return on plan assets		0	0
Employer contributions		0	0
Plan participants’ contributions		0	0
Gross benefits paid		0	0
Currency translation adjustments and other		0	0
Ending plan assets		4	4
Funded status:		(94)	(113)
Other
Change in benefit obligations:
Beginning benefit obligation		193	169
Service cost		9	7
Interest cost		6	5
Plan participants’ contributions		1	1
Actuarial loss (gain)		(3)	17
Gross benefits paid		(17)	(16)
Plan amendments		0	0
Currency translation adjustments and other		(15)	10
Ending benefit obligation		174	193
Change in the fair value of plan assets:
Beginning plan assets		177	166
Actual return on plan assets		14	9
Employer contributions		7	10
Plan participants’ contributions		1	1
Gross benefits paid		(17)	(16)
Currency translation adjustments and other		(13)	7
Ending plan assets		169	177
Funded status:		$ (5)	$ (16)