STOCKHOLDERS' EQUITY - Repurchases of Common Stock (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions	1 Months Ended	6 Months Ended
	Jul. 24, 2018	Jun. 24, 2018	Jun. 25, 2017	Dec. 31, 2017
Shareholders Equity [Line Items]
Common stock repurchased (in shares)		1.9
Reduction to stockholders' equity due to repurchases of common stock		$ 623,000,000	$ 1,000,000,000
Common stock repurchased, amount		610,000,000	1,000,000,000
Total remaining authorization for future common share repurchases		$ 2,900,000,000
Par value of shares repurchased (in dollars per share)		$ 1		$ 1
Additional paid-in capital after reduction		$ 0		$ 0
Reduction to retained earnings
Shareholders Equity [Line Items]
Reduction to stockholders' equity due to repurchases of common stock		$ 460,000,000	$ 828,000,000
Subsequent Event
Shareholders Equity [Line Items]
Common stock repurchased, amount	$ 13,000,000