Accumulated Other Comprehensive Income (AOCI) Components (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of Revenue	$ 14,056	$ 14,892	$ 28,176	$ 28,495
Other Income (Expense)	(2)	(134)	(9)	(134)
Revenues	(14,943)	(15,629)	(29,931)	(30,013)
Earnings Before Income Taxes	(383)	(407)	(841)	(713)
Tax	(108)	(119)	(226)	(195)
Net Earnings Including Noncontrolling Interests	(275)	(288)	(615)	(518)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Currency Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Income (Expense)	0	73	0	73
Tax	0	0	0	0
Net Earnings Including Noncontrolling Interests	0	73	0	73
Reclassification out of Accumulated Other Comprehensive Income [Member] | Deferred (Gain) Loss On Hedging Activities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of Revenue	6	5	5	24
Other Income (Expense)	0	8	2	22
Revenues	(1)	6	0	5
Earnings Before Income Taxes	5	19	7	51
Tax	2	8	3	19
Net Earnings Including Noncontrolling Interests	3	11	4	32
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension Liability Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Earnings Before Income Taxes	13	12	28	22
Tax	4	2	10	3
Net Earnings Including Noncontrolling Interests	9	10	18	19
Selling, General and Administrative Expenses [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension Liability Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Prior Service Cost (Credit)	(3)	(3)	(6)	(7)
Actuarial Losses	$ 16	$ 15	$ 34	$ 29