FAIR VALUE MEASUREMENTS (Schedule of Unrealized Gains Losses Related to Available-for-sale Investments) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2,439	$ 2,180
Total Unrealized Gains	2,164	2,033
Total Unrealized Losses	(22)	(4)
Total Fair Value	4,581	4,209
Amount primarily related to deferred taxes on appreciation of investment value	783	671
Short-term investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	22	27
Total Unrealized Gains	0	0
Total Unrealized Losses	0	0
Total Fair Value	22	27
Global equity securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	479	543
Total Unrealized Gains	2,066	1,881
Total Unrealized Losses	(10)	(1)
Total Fair Value	2,535	2,423
Fixed-income securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,938	1,610
Total Unrealized Gains	98	152
Total Unrealized Losses	(12)	(3)
Total Fair Value	$ 2,024	$ 1,759