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EMPLOYEE BENEFITS (Details - Changes in Level 3 fair value measurements) - Pensions - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
U.S.    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year $ 4,931 $ 4,465
Fair value of plan assets, end of year 4,746 4,931
U.S. | Level 3    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 16 20
Net Realized and Unrealized Gains (Losses) 2 (2)
Purchases 6 0
Sales (4) (2)
Settlements 0 0
Issuances 0 0
Transfers In 5 0
Transfers Out 0 0
Fair value of plan assets, end of year 25 16
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 1 (3)
U.S. | Level 3 | Other comprehensive income    
Changes in Level 3 fair value measurements    
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 0 0
U.S. | Level 3 | Fixed maturity securities: U.S. investment grade    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 10 9
Net Realized and Unrealized Gains (Losses) 0 1
Purchases 5 0
Sales (4) 0
Settlements 0 0
Issuances 0 0
Transfers In 5 0
Transfers Out 0 0
Fair value of plan assets, end of year 16 10
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 0 0
U.S. | Level 3 | Fixed maturity securities: U.S. investment grade | Other comprehensive income    
Changes in Level 3 fair value measurements    
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 0 0
U.S. | Level 3 | Direct private equity    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 6 11
Net Realized and Unrealized Gains (Losses) 2 (3)
Purchases 0 0
Sales 0 (2)
Settlements 0 0
Issuances 0 0
Transfers In 0 0
Transfers Out 0 0
Fair value of plan assets, end of year 8 6
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 1 (3)
U.S. | Level 3 | Direct private equity | Other comprehensive income    
Changes in Level 3 fair value measurements    
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 0 0
U.S. | Level 3 | Mortgage-backed, asset-backed and collateralized    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 0  
Net Realized and Unrealized Gains (Losses) 0  
Purchases 1  
Sales 0  
Settlements 0  
Issuances 0  
Transfers In 0  
Transfers Out 0  
Fair value of plan assets, end of year 1 0
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 0  
U.S. | Level 3 | Mortgage-backed, asset-backed and collateralized | Other comprehensive income    
Changes in Level 3 fair value measurements    
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 0  
U.S. | Level 3 | Insurance contracts    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 0  
Fair value of plan assets, end of year 0 0
Non U.S. Plans    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 977 899
Fair value of plan assets, end of year 996 977
Non U.S. Plans | Level 3    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 179 160
Net Realized and Unrealized Gains (Losses) (9) 18
Purchases 1 1
Sales 0 0
Settlements 0 0
Issuances 0 0
Transfers In 0 0
Transfers Out 0 0
Fair value of plan assets, end of year 171 179
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 0 0
Non U.S. Plans | Level 3 | Other comprehensive income    
Changes in Level 3 fair value measurements    
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 0 0
Non U.S. Plans | Level 3 | Fixed maturity securities: U.S. investment grade    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 0  
Fair value of plan assets, end of year 0 0
Non U.S. Plans | Level 3 | Direct private equity    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 0  
Fair value of plan assets, end of year 0 0
Non U.S. Plans | Level 3 | Mortgage-backed, asset-backed and collateralized    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 0  
Fair value of plan assets, end of year 0 0
Non U.S. Plans | Level 3 | Insurance contracts    
Changes in Level 3 fair value measurements    
Fair value of plan assets, beginning of year 179 160
Net Realized and Unrealized Gains (Losses) (9) 18
Purchases 1 1
Sales 0 0
Settlements 0 0
Issuances 0 0
Transfers In 0 0
Transfers Out 0 0
Fair value of plan assets, end of year 171 179
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year 0 0
Non U.S. Plans | Level 3 | Insurance contracts | Other comprehensive income    
Changes in Level 3 fair value measurements    
Changes in Unrealized Gains (Losses) on Instruments Held at End of Year $ 0 $ 0