Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Name:	us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

RETIREMENT-RELATED BENEFITS - Contributions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement-Related Benefits
Noncurrent liability for retirement and nonpension postretirement benefit	$ 856	$ 550
Net transfers from Parent		872	$ 598
Accumulated Other Comprehensive Income (Loss)
Retirement-Related Benefits
Net transfers from Parent	(339)
Net Change Retirement-Related Benefit Plans
Retirement-Related Benefits
Net transfers from Parent	(339)
Nonpension Postretirement Plans
Retirement-Related Benefits
Noncurrent liability for retirement and nonpension postretirement benefit	$ 18	$ 1