Employee Benefit Plans (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Defined Benefit Plan, Amounts Recognized in Balance Sheet
Accrued expenses		$ (55)		$ (35)
Other long-term liabilities		(476)		(448)
Pension Plans [Member]
Changes in benefit obligation
Benefit obligation as of beginning of year		2,413	[1]	3,463
Service cost		111		152		$ 161
Interest cost		121		85		73
Participant contributions		0		0
Plan amendments		19		0
Benefits paid		(166)		(366)
Actuarial (gain) loss		110		(882)
Foreign currency exchange rate changes		10		(39)
Benefit obligation as of end of year		2,618	[1]	2,413	[1]	3,463
Changes in plan assets
Fair value of plan assets as of beginning of year	[1]	2,485		3,303
Actual return on plan assets	[1]	399		(532)
Company contributions	[1]	101		120
Participant contributions	[1]	0		0
Benefits paid	[1]	(166)		(366)
Foreign currency exchange rate changes	[1]	16		(40)
Fair value of plan assets as of end of year	[1]	2,835		2,485		$ 3,303
Reconciliation of funded status:
Funded status as of end of year	[1]	217		72
Accumulated benefit obligation		$ 2,450		$ 2,271
Actuarial Gain (Loss), Discount Rates (Textual)
Discount rate		5.01%		5.19%		2.93%
Defined Benefit Plan, Amounts Recognized in Balance Sheet
Deferred charges and other assets, net		$ 482		$ 297
Accrued expenses		(32)		(14)
Other long-term liabilities		(233)		(211)
Amounts recognized in balance sheet for defined benefit plans		217		72
Other Postretirement Benefit Plans [Member]
Changes in benefit obligation
Benefit obligation as of beginning of year		258	[1]	347
Service cost		4		6		$ 7
Interest cost		13		8		7
Participant contributions		22		13
Plan amendments		0		0
Benefits paid		(42)		(29)
Actuarial (gain) loss		10		(86)
Foreign currency exchange rate changes		1		(1)
Benefit obligation as of end of year		266	[1]	258	[1]	347
Changes in plan assets
Fair value of plan assets as of beginning of year	[1]	0		0
Actual return on plan assets	[1]	0		0
Company contributions	[1]	20		16
Participant contributions	[1]	22		13
Benefits paid	[1]	(42)		(29)
Foreign currency exchange rate changes	[1]	0		0
Fair value of plan assets as of end of year	[1]	0		0		$ 0
Reconciliation of funded status:
Funded status as of end of year	[1]	$ (266)		$ (258)
Actuarial Gain (Loss), Discount Rates (Textual)
Discount rate		5.01%		5.20%
Defined Benefit Plan, Amounts Recognized in Balance Sheet
Deferred charges and other assets, net		$ 0		$ 0
Accrued expenses		(23)		(21)
Other long-term liabilities		(243)		(237)
Amounts recognized in balance sheet for defined benefit plans		$ (266)		$ (258)

[1] Plan assets include only the assets associated with pension plans subject to legal minimum funding standards. Plan assets associated with U.S. nonqualified pension plans are not included here because they are not protected from our creditors and therefore cannot be reflected as a reduction from our obligations under the pension plans. As a result, the reconciliation of funded status does not reflect the effect of plan assets that exist for all of our defined benefit plans. See Note 19 for the assets associated with certain U.S. nonqualified pension plans.