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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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DEBT AND CREDIT FACILITIES - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Repayments of long-term debt				$ 3,750,000,000
Debt issued		$ 0		0
Revolving Credit Facility
Debt Instrument [Line Items]
Amounts outstanding under revolving credit facilities		0		0	$ 0
Revolving Credit Facility \| The "2020 Revolving Credit Facility"
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 2,500,000,000		$ 2,500,000,000
Senior Notes \| 4.50% Senior Unsecured Notes Due April 2021
Debt Instrument [Line Items]
Repayments of senior unsecured notes			$ 1,000,000,000
Stated percentage		4.50%		4.50%
Senior Notes \| 4.40% Senior Unsecured Notes Due December 2021
Debt Instrument [Line Items]
Repayments of long-term debt		$ 1,250,000,000
Stated percentage		4.40%		4.40%
Senior Notes \| 0.15% LIBOR Senior Unsecured Notes Due September 2021
Debt Instrument [Line Items]
Repayments of senior unsecured notes				$ 500,000,000
Senior Notes \| 0.52% LIBOR Senior Unsecured Notes Due September 2023 \| Subsequent Event
Debt Instrument [Line Items]
Repayments of long-term debt	$ 500,000,000
Senior Notes \| 0.75% Senior Unsecured Notes Due September 2023
Debt Instrument [Line Items]
Stated percentage		0.75%		0.75%
Senior Notes \| 0.75% Senior Unsecured Notes Due September 2023 \| Subsequent Event
Debt Instrument [Line Items]
Repayments of long-term debt	$ 500,000,000
Medium-term Notes \| Three-Year Senior Term Loan Facility
Debt Instrument [Line Items]
Repayments of senior unsecured notes				$ 1,000,000,000
Contractual term				3 years
Maximum borrowing capacity		$ 1,000,000,000		$ 1,000,000,000