REVENUE RECOGNITION - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cooperative advertising credits included in rebates	$ 2,156,000,000	$ 2,500,000,000	$ 2,156,000,000	$ 2,500,000,000		$ 2,384,000,000	$ 2,546,000,000
Price appreciation credits	2,209,000,000	2,136,000,000	6,377,000,000	6,259,000,000
Price Appreciation Credit
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Price appreciation credits			0	15,000,000
Sales Returns
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net improvement in provision			159,000,000
Reduction in variable consideration provision, adjustment	80,000,000	30,000,000
Cooperative advertising credits included in rebates	679,000,000	808,000,000	679,000,000	808,000,000		$ 813,000,000	$ 863,000,000
Rebates, Advertising Credits Portion
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cooperative advertising credits included in rebates	$ 26,000,000	$ 29,000,000	$ 26,000,000	$ 29,000,000	$ 26,000,000