STOCKHOLDERS' EQUITY - Repurchases of Common Stock (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 24, 2017	Sep. 27, 2018	Dec. 31, 2017
Shareholders Equity [Line Items]
Common stock repurchased (in shares)	2.5
Reduction to stockholders' equity due to repurchases of common stock	$ 826,000,000	$ 1,500,000,000
Total remaining authorization for future common share repurchases	$ 3,700,000,000
Number of shares authorized to be repurchased (in shares)			1,000.0
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	$ 523,000,000	$ 1,213,000,000