STOCKHOLDERS’ EQUITY - Employee Purchase Plan Narrative (Details) - USD ($)		1 Months Ended					3 Months Ended								6 Months Ended		12 Months Ended
	May 07, 2019	Jul. 31, 2019	May 31, 2019	Apr. 30, 2019	Feb. 28, 2019	Nov. 30, 2018	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 28, 2018	Nov. 30, 2016	Jul. 31, 2012
Stockholders Equity Note [Line Items]
Shares available for future awards under the stock-based compensation plans (in shares)							24,000,000										24,000,000
Cash dividends declared per common share (in dollars per share)		$ 0.22	$ 0.22	$ 0.19	$ 0.19	$ 0.22	$ 0.220	$ 0.220	$ 0.220	$ 0.190	$ 0.190	$ 0.190	$ 0.190	$ 0.160			$ 0.85	$ 0.73	$ 0.61
Cash dividends declared per common share annualized basis (in dollars per share)		$ 0.88	$ 0.88	$ 0.76	$ 0.76
Stock repurchase program, authorized amount																						$ 2,000,000,000.0
Stock repurchase program, additional authorized amount						$ 2,000,000,000.0														$ 1,500,000,000	$ 1,500,000,000
Purchases of common stock (in shares)																	16,500,000	35,800,000	9,200,000
Purchases of common stock									$ (111,000,000)	$ (586,000,000)			$ (259,000,000)	$ (522,000,000)	$ (697,000,000)	$ (781,000,000)	$ (1,247,000,000)	$ (2,475,000,000)	$ (564,000,000)
Stock repurchase program, liability							$ 23,000,000										23,000,000
Remaining value available under stock repurchase programs							$ 897,000,000										$ 897,000,000
ASR Agreement
Stockholders Equity Note [Line Items]
Stock repurchase program, authorized amount											$ 300,000,000							$ 300,000,000
Purchases of common stock (in shares)	600,000																	3,600,000
Employee Stock Purchase Plan
Stockholders Equity Note [Line Items]
Employee purchase price, percent																	85.00%
Authorized shares available for future awards under the stock-based compensation plans (in shares)							10,000,000										10,000,000
Shares available for future awards under the stock-based compensation plans (in shares)							3,000,000										3,000,000
Share issued, ESPP (in shares)																	700,000	800,000	800,000