DISPOSITION (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Apr. 01, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense		$ 153	$ 177	$ 483	$ 269
Deferred income tax (benefit) provision				(87)	$ 12
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%
Gross proceeds from disposition of joint venture	$ 760
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
Q2 Solutions | Disposed of by Sale | Other Income
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of investment, before tax				$ (314)