Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock and Additional Paid-In Capital	Treasury Stock	Accumulated Deficit	UTC Net Investment (Deficit)	UTC Net Investment (Deficit) Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)	Total Shareholders' (Deficit) Equity	Total Shareholders' (Deficit) Equity Cumulative Effect, Period of Adoption, Adjustment	Noncontrolling Interest
Beginning balance at Dec. 31, 2018	$ 2,012		$ 0	$ 0	$ 0	$ 2,262		$ (708)	$ 1,554		$ 458
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net transfers (to) from UTC	(935)					(935)			(935)
Net income	1,263					1,116			1,116		147
Other comprehensive income (loss), net of tax	(59)							(50)	(50)		(9)
Dividends attributable to noncontrolling interest	(146)										(146)
Acquisitions, disposals and other changes	$ (7)					(13)			(13)		6
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2016-13 [Member]
Ending balance at Dec. 31, 2019	$ 2,128	$ (25)	0	0	0	2,430	$ (25)	(758)	1,672	$ (25)	456
Beginning balance at Dec. 31, 2018	203
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income	4
Other comprehensive income (loss), net of tax	(2)
Dividends attributable to noncontrolling interest	(17)
Acquisitions, disposals and other changes	10
Ending balance at Dec. 31, 2019	198
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net transfers (to) from UTC	(6,150)					(6,150)			(6,150)
Net income	1,044				741	165			906		138
Other comprehensive income (loss), net of tax	(23)							(57)	(57)		34
Dividends attributable to noncontrolling interest	(138)										(138)
Acquisitions, disposals and other changes	(26)				(3)				(3)		(23)
Issuance of Common Stock and reclassification of deficit	0		4		(3,584)	3,580
Stock-based compensation and Common Stock issued under employer plans	55		55						55
Cash dividends declared	(260)				(260)				(260)
Ending balance at Dec. 31, 2020	(3,395)		59	0	(3,106)	0		(815)	(3,862)		467
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income	12
Other comprehensive income (loss), net of tax	2
Dividends attributable to noncontrolling interest	(9)
Acquisitions, disposals and other changes	(9)
Ending balance at Dec. 31, 2020	194
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,409				1,246				1,246		163
Other comprehensive income (loss), net of tax	37							52	52		(15)
Dividends attributable to noncontrolling interest	(145)										(145)
Acquisitions, disposals and other changes	8		(2)		(1)				(3)		11
Stock-based compensation and Common Stock issued under employer plans	60		62		(2)				60
Cash dividends declared	(393)				(393)				(393)
Repurchase of Common Shares	(725)			(725)					(725)
Ending balance at Dec. 31, 2021	(3,144)		$ 119	$ (725)	$ (2,256)	$ 0		$ (763)	$ (3,625)		$ 481
Increase (Decrease) in Temporary Equity [Roll Forward]
Net income	11
Other comprehensive income (loss), net of tax	(12)
Dividends attributable to noncontrolling interest	(11)
Acquisitions, disposals and other changes	(22)
Ending balance at Dec. 31, 2021	$ 160