STOCKHOLDERS' EQUITY - Schedule of Changes in the Balance of AOCL, Net of Tax (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 24, 2018	Jun. 25, 2017	Jun. 24, 2018	Jun. 25, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance			$ (776)	$ 1,477
Other comprehensive income before reclassifications			(62)	56
Total reclassified from AOCL			614	409
Other comprehensive income, net of tax	$ 194	$ 255	552	465
Reclassification of income tax effects from tax reform			2,400
Ending Balance	479	1,259	479	1,259
Amounts reclassified from accumulated other comprehensive loss	300	200	600	402
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			600	402
Other comprehensive income, net of tax			600	405
Reclassification of income tax effects from tax reform			(2,396)
Ending Balance	(14,355)	(11,576)	(14,355)	(11,576)
Other, net
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance			20	(121)
Other comprehensive income before reclassifications			(62)	53
Total reclassified from AOCL			14	7
Other comprehensive income, net of tax			(48)	60
Reclassification of income tax effects from tax reform			(12)
Ending Balance	(40)	(61)	(40)	(61)
AOCL
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Beginning Balance			(12,539)	(12,102)
Other comprehensive income, net of tax			552	465
Reclassification of income tax effects from tax reform			(2,408)
Ending Balance	(14,395)	(11,637)	(14,395)	(11,637)
Recognition of net actuarial losses
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Total reclassified from AOCL			728	516
Amortization of net prior service credits
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Total reclassified from AOCL			(128)	(114)
Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Total reclassified from AOCL			$ 14	$ 7
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)