REVENUE RECOGNITION - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Jan. 01, 2021	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cooperative advertising credits included in rebates	$ 1,891,000,000	$ 1,995,000,000		$ 1,813,000,000		$ 2,050,000,000
Price appreciation credits	2,027,000,000	2,012,000,000
Price Appreciation Credit
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Price appreciation credits	1,000,000	4,000,000
Rebates, Advertising Credits Portion
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cooperative advertising credits included in rebates	$ 34,000,000	$ 32,000,000	$ 32,000,000		$ 29,000,000