STOCKHOLDERS' EQUITY - Schedule of Changes in the Balance of AOCL, Net of Tax (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 24, 2017	Sep. 30, 2018	Sep. 24, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance			$ (776)	$ 1,477
Other comprehensive income before reclassifications			(53)	126
Total reclassified from AOCL			923	616
Other comprehensive income, net of tax	$ 318	$ 277	870	742
Reclassification of income tax effects from tax reform			2,400
Ending Balance	1,002	2,108	1,002	2,108
Amounts reclassified from accumulated other comprehensive loss	300	200	900	602
Postretirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance			(12,559)	(11,981)
Other comprehensive income before reclassifications			0	3
Total reclassified from AOCL			900	602
Other comprehensive income, net of tax			900	605
Reclassification of income tax effects from tax reform			(2,396)
Ending Balance	(14,055)	(11,376)	(14,055)	(11,376)
Other, net
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance			20	(121)
Other comprehensive income before reclassifications			(53)	123
Total reclassified from AOCL			23	14
Other comprehensive income, net of tax			(30)	137
Reclassification of income tax effects from tax reform			(12)
Ending Balance	(22)	16	(22)	16
AOCL
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance			(12,539)	(12,102)
Other comprehensive income, net of tax			870	742
Reclassification of income tax effects from tax reform			(2,408)
Ending Balance	(14,077)	(11,360)	(14,077)	(11,360)
Recognition of net actuarial losses
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Total reclassified from AOCL			1,092	774
Amortization of net prior service credits
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Total reclassified from AOCL			(192)	(172)
Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Total reclassified from AOCL			$ 23	$ 14
Postretirement Benefit Plan Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Amounts reclassified from accumulated other comprehensive loss	300	200
Recognition of net actuarial losses	364	258
Amortization of net prior service credits	$ (64)	$ (58)