REDEEMABLE NONCONTROLLING INTEREST - Summary of Redeemable Noncontrolling Interest (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance, beginning of period	[1],[2]			$ 365
Net earnings (loss) attributable to redeemable noncontrolling interests		$ 86	$ 67	123	$ 133
Balance, end of period	[1],[2]	87		87
Redeemable Noncontrolling Interest
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance, beginning of period		257	207	365	187
Net earnings (loss) attributable to redeemable noncontrolling interests		25	7	(5)	19
Purchase/change of redeemable noncontrolling interests		(195)	43	(273)	51
Balance, end of period		$ 87	$ 257	$ 87	$ 257

[1] See Note 13 for details of Redeemable noncontrolling interest.

[2] See Note 2 for details of balances with variable interest entities.