Consolidated Statements Of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenues	$ 14,943	$ 15,629	$ 29,931	$ 30,013
Cost of Revenue	14,056	14,892	28,176	28,495
Gross Profit	887	737	1,755	1,518
Selling, general, and administrative expenses	531	500	1,052	979
Asset impairment, exit, and restructuring costs	23	12	33	25
Interest expense	86	65	167	135
Equity in earnings of unconsolidated affiliates	(109)	(90)	(281)	(155)
Interest income	(25)	(23)	(48)	(45)
Other Income (Expense)	(2)	(134)	(9)	(134)
Earnings Before Income Taxes	383	407	841	713
Income taxes	108	119	226	195
Net earnings including noncontrolling interests	275	288	615	518
Less: Net earnings (losses) attributable to noncontrolling interests	(1)	4	0	4
Net Earnings Attributable to Controlling Interests	$ 276	$ 284	$ 615	$ 514
Average number of shares outstanding - basic	571	591	574	593
Average number of shares outstanding - diluted	574	594	576	595
Earnings Per Share, Basic	$ 0.48	$ 0.48	$ 1.07	$ 0.87
Earnings Per Share, Diluted	0.48	0.48	1.07	0.87
Dividends per common share	$ 0.32	$ 0.30	$ 0.64	$ 0.60