Consolidated Statements Of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Revenues	$ 14,827	$ 15,832	$ 44,758	$ 45,845
Cost of Revenue	14,015	14,742	42,191	43,237
Gross Profit	812	1,090	2,567	2,608
Selling, general, and administrative expenses	478	546	1,530	1,525
Asset impairment, exit, and restructuring costs	107	11	140	36
Interest expense	79	78	246	213
Equity in (earnings) losses of unconsolidated affiliates	(46)	2	(327)	(153)
Interest income	(27)	(23)	(75)	(68)
Other Income (Expense)	(4)	(4)	(13)	(138)
Earnings Before Income Taxes	225	480	1,066	1,193
Income taxes	30	136	256	331
Net earnings including noncontrolling interests	195	344	810	862
Less: Net earnings (losses) attributable to noncontrolling interests	3	3	3	7
Net Earnings Attributable to Controlling Interests	$ 192	$ 341	$ 807	$ 855
Average number of shares outstanding - basic	566	586	571	591
Average number of shares outstanding - diluted	569	589	574	593
Earnings Per Share, Basic	$ 0.34	$ 0.58	$ 1.41	$ 1.45
Earnings Per Share, Diluted	0.34	0.58	1.41	1.44
Dividends per common share	$ 0.32	$ 0.30	$ 0.96	$ 0.9