REPOSITIONING AND OTHER CHARGES - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) employee	Mar. 31, 2021 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Charges	$ 147	$ 119
Restructuring costs	$ 132	$ 120
Number of employees severed | employee	1,196	1,021
Reserves against outstanding accounts receivables, contract assets and impairments of other assets	$ 387	$ 141
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Reserves against outstanding accounts receivables, contract assets and impairments of other assets	188	43
Russia and Ukraine Conflict | Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Reserves against outstanding accounts receivables, contract assets and impairments of other assets	183
Severance
Restructuring Cost and Reserve [Line Items]
Charges	7
Restructuring costs	7	28
Asset impairments
Restructuring Cost and Reserve [Line Items]
Charges	123
Restructuring costs	123	42
Exit costs
Restructuring Cost and Reserve [Line Items]
Charges	17
Restructuring costs	17	49
Restructuring costs incurred to date	$ 11	$ 10