Accumulated Other Comprehensive Income (AOCI) Components (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of Revenue	$ 14,120	$ 13,603
Other Income (Expense)	(7)	0
Revenues	(14,988)	(14,384)
Earnings Before Income Taxes	(458)	(306)
Tax	118	76
Net Earnings Including Noncontrolling Interests	(340)	(230)
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	(1)	19
Other Income (Expense)	2	14
Revenues	1	(1)
Earnings Before Income Taxes	2	32
Tax	(1)	(11)
Net Earnings Including Noncontrolling Interests	1	21
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	15	10
Tax	(6)	(1)
Net Earnings Including Noncontrolling Interests	9	9
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)	(4)
Actuarial Loss (Gain)	$ 18	$ 14