DISPOSITION (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Apr. 01, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from disposition of investment				$ 755	$ 0
Income tax expense		$ 177	$ 66	330	92
Deferred income tax (benefit) provision				$ (89)	$ 23
Q2 Solutions | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percent of ownership interest sold	40.00%
Proceeds from disposition of investment	$ 760
Gain on sale of investment, before tax		(314)
Income tax expense		55
Current income tax expense (benefit)		127
Deferred income tax (benefit) provision		72
Q2 Solutions | Disposed of by Sale | Foreign Currency Translation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amounts reclassified from accumulated other comprehensive (loss) income		$ 20