Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Current income taxes:
Federal	$ 6		$ 1		$ 32
Foreign	(270)		(167)		(426)
State	(6)		0		(9)
Total current	(270)		(166)		(403)
Deferred income taxes:
Federal	533		372		383
Foreign	(47)		2		(36)
State	0		70		49
Total deferred	486		444		396
Income tax (provision) benefit	216		278		(7)
The United States and foreign components of income from continuing operations before income taxes [Abstract]
United States	283		(3,031)		(1,517)
Foreign	969		(189)		395
Income (loss) before income taxes	$ 1,252		$ (3,220)		$ (1,122)
Reconciliations between the actual provision for income taxes on continuing operations [Abstract]
United States statutory rate	21.00%		21.00%		21.00%
Impact of impairments and other charges	0.00%		(12.30%)		(20.90%)
Adjustments of prior year taxes	1.30%		0.70%		13.00%
Valuation allowance against tax assets	(44.50%)		0.90%		(10.70%)
State income taxes	0.10%		0.00%		(1.30%)
Impact of foreign income taxed at different rates	2.50%		(1.10%)		0.80%
Other items, net	2.40%		(0.60%)		(2.50%)
Total effective tax rate on continuing operations	(17.20%)		8.60%		(0.60%)
Gross deferred tax assets:
Net operating loss carryforwards	$ 736		$ 1,691
Foreign tax credit carryforwards	1,041		945
Deferred Tax Assets, Goodwill and Intangible Assets	924		0
Research and development tax credit carryforwards	203		196
Employee compensation and benefits	166		237
Accrued Liabilities	292		263
Other	457		469
Total gross deferred tax assets	3,819		3,801
Gross deferred tax liabilities:
Depreciation and amortization	131		7
Operating lease right-of-use assets	160		86
Other	9		155
Total gross deferred tax liabilities	300		248
Valuation allowances	885		1,394
Net deferred income tax asset	2,634		2,159
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	795
Unrecognized Tax Benefits, Period Increase (Decrease)	59
Unrecognized Tax Benefits
Beginning Balance	355	[1]	425		$ 417
Change in prior year tax positions	14				25
Change in prior year tax positions			(66)
Change in current year tax positions	14		16		29
Cash settlements with taxing authorities	(10)		(3)		(4)
Lapse of statute of limitations	(21)		(17)		(42)
Ending balance	352	[1]	355	[1]	425
Interest and Penalties
Beginning balance	71		70		67
Change in prior year tax positions	4		6		(11)
Change in current year tax positions	2		0		0
Cash settlements with taxing authorities	0		0		0
Lapse of statute of limitations	(5)		(5)		(8)
Ending balance	72		71		$ 70
Remaining balance if resolved in our favor would positively impact the effective tax rate	272		224
Portion of unrecognized tax benefits that could be resolved within the next 12 months	69
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	509
Net operating loss carryforwards	736		1,691
Foreign tax credit carryforwards	1,041		945
Research and development tax credit carryforwards	203		196
Deferred Tax Assets, Operating Loss Carryforwards, Domestic, Not Subject to Expiration	9
Deferred Tax Assets, Operating Loss Carryforwards, Foreign, Not Subject to Expiration	410
Deferred Tax Assets, Tax Credit Carryforwards, Foreign, Not Subject to Expiration	0
Deferred Tax Assets, Tax Credit Carryforwards, Research, Not Subject to Expiration	0
Deferred Tax Assets, Operating Loss Carryforwards and Tax Credit Carryforwards, Not Subject to Expiration	419
Deferred Tax Assets, Estimated Tax Credit Carryforwards, Research	203
Deferred Tax Assets, Estimated Tax Credit Carryforwards, Foreign	1,178
Deferred Tax Assets, Estimated Operating Loss Carryforwards, Foreign	724
Deferred Tax Assets, Estimated Operating Loss Carryforwards, Domestic	71
Deferred Tax Assets, Operating Loss Carryforwards and Tax Credit Carryforwards	2,176
2022-2026
Gross deferred tax assets:
Foreign tax credit carryforwards	668
Research and development tax credit carryforwards	0
Interest and Penalties
U.S. Net Operating Loss	2
Foreign Net Operating Loss	133
Foreign tax credit carryforwards	668
Research and development tax credit carryforwards	0
Deferred Tax Assets, Gross	803
2027-2031
Gross deferred tax assets:
Foreign tax credit carryforwards	510
Research and development tax credit carryforwards	0
Interest and Penalties
U.S. Net Operating Loss	8
Foreign Net Operating Loss	73
Foreign tax credit carryforwards	510
Research and development tax credit carryforwards	0
Deferred Tax Assets, Gross	591
2032-2041
Gross deferred tax assets:
Foreign tax credit carryforwards	0
Research and development tax credit carryforwards	203
Interest and Penalties
U.S. Net Operating Loss	52
Foreign Net Operating Loss	108
Foreign tax credit carryforwards	0
Research and development tax credit carryforwards	203
Deferred Tax Assets, Gross	363
All Other Countries [Domain]
Interest and Penalties
Remaining balance if resolved in our favor would positively impact the effective tax rate	20		$ 18
Tax credits [Member] | Foreign
Interest and Penalties
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 519

[1] Includes $20 million as of December 31, 2021 and $18 million as of December 31, 2020 in foreign unrecognized tax benefits that would give rise to a United States tax credit. As of December 31, 2021 and December 31, 2020, a net $272 million and $224 million without a net operating loss carryforward offset, respectively, of unrecognized tax benefits would positively impact the effective tax rate and be recognized as additional tax benefits in our statement of operations if resolved in our favor.