STOCKHOLDERS' EQUITY - Repurchases of Common Stock (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 24, 2018	Jun. 30, 2019	Jun. 24, 2018	Dec. 31, 2018
Shareholders Equity [Line Items]
Common stock repurchased (in shares)			1.6
Reduction to stockholders' equity due to repurchases of common stock	$ 216	$ 323	$ 500	$ 623
Total remaining authorization for future common share repurchases	$ 2,500		$ 2,500
Par value of shares repurchased (in dollars per share)	$ 1		$ 1		$ 1
Additional paid-in capital after reduction	$ 0		$ 0		$ 0
Reduction to retained earnings
Shareholders Equity [Line Items]
Reduction to stockholders' equity due to repurchases of common stock	$ 41	$ 186	$ 278	$ 460