Accumulated Other Comprehensive Income (AOCI) Components (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated other comprehensive income (loss)
Cost of Revenue	$ 16,222	$ 20,322	$ 32,626	$ 40,343
Other (income) expense - net	(89)	3	(99)	(20)
Revenues	(17,186)	(21,494)	(34,692)	(42,190)
Earnings Before Income Taxes	(526)	(735)	(1,216)	(1,101)
Tax	143	203	340	301
Net Earnings Including Noncontrolling Interests	(383)	(532)	(876)	(800)
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Deferred (Gain) Loss On Hedging Activities [Member]
Accumulated other comprehensive income (loss)
Cost of Revenue	17	(11)	17	(7)
Other (income) expense - net	(4)	0	(21)	0
Revenues	2	58	(45)	85
Earnings Before Income Taxes	15	47	(49)	78
Tax	(6)	(18)	18	(29)
Net Earnings Including Noncontrolling Interests	9	29	(31)	49
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Pension Liability Adjustment [Member]
Accumulated other comprehensive income (loss)
Prior service cost (credit)	(11)	(4)	(13)	(8)
Actuarial (gains ) losses	15	9	42	18
Earnings Before Income Taxes	4	5	29	10
Tax	0	(1)	(17)	(3)
Net Earnings Including Noncontrolling Interests	$ 4	$ 4	$ 12	$ 7