FAIR VALUE MEASUREMENTS - Fair Value Recurring (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021		Dec. 31, 2020
Debt Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of year	[1]		$ 250	$ 200	[2]	$ 250
Unrealized gains (losses)				265	[2]	0	[1]
Transfers out of Level 3				(465)	[2]	(50)	[1]
Balance, end of year	[2]			0		$ 200	[1]
Debt Securities | Grab
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Debt securities, available-for-sale, unrealized gain (loss)				$ 265
Long-term Investments | Grab | Redeemable convertible preferred stock
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Debt securities, available-for-sale, unrealized gain (loss)		$ 20	$ (20)

[1] The Company recognized an unrealized loss of $20 million during the three months ended March 31, 2020 and an unrealized gain of $20 million during the three months ended June 30, 2020 related to the investment in Grab Holdings Inc., which is recorded in "Accumulated other comprehensive loss" in the Consolidated Balance Sheet. During the year ended December 31, 2020, the Company's investment in Yanolja was reclassified as equity securities without readily determinable fair value due to changes in the redemption features of the preferred shares.

[2] In December 2021, as a result of the Grab Transaction, the Company’s investment in Grab was reclassified as equity securities with readily determinable fair values (see Note 5) and the aggregate unrealized gains of $265 million was reclassified from "Accumulated other comprehensive loss" in the Consolidated Balance Sheet to "Other income (expense), net" in the Consolidated Statement of Operation for the year ended December 31, 2021 (see Note 14)