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BUSINESS SEGMENTS - Reconciliation of Contribution to Earnings to Net Earnings (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of Contribution (Charge) to Earnings From Segment to Net Earnings [Line Items]
Contribution (charge) to earnings from continuing operations									$ 1,182	$ 1,109	$ 1,892
Interest expense, net of capitalized interest(1)									(375)	(393)	(436)
Income before income taxes(1)									807	716	1,456
Income taxes(1)									(59)	(134)	(429)
Net earnings	$ (93)	$ 255	$ 317	$ 269	$ 271	$ 130	$ 24	$ 157	748	582	1,027
Continuing operations
Reconciliation of Contribution (Charge) to Earnings From Segment to Net Earnings [Line Items]
Contribution (charge) to earnings from continuing operations									1,182	1,109	935
Discontinued operations
Reconciliation of Contribution (Charge) to Earnings From Segment to Net Earnings [Line Items]
Contribution (charge) to earnings from continuing operations									$ 0	$ 0	$ 957