Income and Other Taxes - Deferred Tax Asset and Liability (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 1986
Deferred Tax Assets And Liabilities [Line Items]
Research and development	$ 185	$ 150
Post-retirement medical benefits	78	94
Net operating losses	363	377
Operating reserves, accruals and deferrals	133	124
Tax credit carryforwards	143	249
Deferred and share-based compensation	24	13
Pension	7	211
Depreciation	31	35
Operating lease liabilities	62	82
Other	36	44
Subtotal	1,062	1,379
Valuation allowance	(357)	(396)
Total	705	983
Finance lease and installment sales	61	247
Intangibles and goodwill	122	140
Unremitted earnings of foreign subsidiaries	31	31
Operating lease ROU assets	58	76
Other	22	16
Total	294	510
Total Deferred Taxes, Net	411	473
Deferred tax assets	519	508
Valuation allowance, increase (decrease) in amount	(39)	(3)	$ 2
Tax credit carryforwards	143
Carryforwards with no expiration
Deferred Tax Assets And Liabilities [Line Items]
Tax credit carryforwards	2
Deferred tax assets, operating loss carryforwards, not subject to expiration	1,600
Carryforwards that expire
Deferred Tax Assets And Liabilities [Line Items]
Tax credit carryforwards	141
Operating loss carryforwards	496
Other long-term liabilities
Deferred Tax Assets And Liabilities [Line Items]
Deferred tax liabilities	$ (108)	(35)
Accounting Standards Update 2018-05
Deferred Tax Assets And Liabilities [Line Items]
Undistributed earnings of foreign subsidiaries		$ 350		$ 330