REVENUE RECOGNITION - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jan. 01, 2020	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales return provisions			$ 3,697,000,000	$ 3,860,000,000
Cooperative advertising credits included in rebates	$ 1,902,000,000	$ 2,156,000,000	1,902,000,000	2,156,000,000		$ 2,050,000,000		$ 2,384,000,000
Price appreciation credits	2,138,000,000	2,209,000,000	5,814,000,000	6,377,000,000
Price Appreciation Credit
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Price appreciation credits			4,000,000	0
Returns
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales return provisions			71,000,000	50,000,000
Reduction in variable consideration provision, adjustment	38,000,000	80,000,000
Cooperative advertising credits included in rebates	577,000,000	679,000,000	577,000,000	679,000,000		$ 691,000,000		$ 813,000,000
Rebates, Advertising Credits Portion
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cooperative advertising credits included in rebates	$ 33,000,000	$ 26,000,000	$ 33,000,000	$ 26,000,000	$ 29,000,000		$ 26,000,000