Intangible Assets and Goodwill (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	$ 7,217
Impairments, beginning of period	(602)
Net goodwill, beginning of period	6,615
Goodwill Acquired	0
Goodwill impairment charge	0	$ 0
Other adjustments	95
Goodwill, end of period	7,312
Impairments, end of period	(602)
Net goodwill, end of period	6,710
Construction Industries
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	285
Impairments, beginning of period	(22)
Net goodwill, beginning of period	263
Goodwill Acquired	0
Other adjustments	15
Goodwill, end of period	300
Impairments, end of period	(22)
Net goodwill, end of period	278
Resource Industries
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	4,145
Impairments, beginning of period	(580)
Net goodwill, beginning of period	3,565
Goodwill Acquired	0
Other adjustments	57
Goodwill, end of period	4,202
Impairments, end of period	(580)
Net goodwill, end of period	3,622
Energy & Transportation
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	2,738
Goodwill Acquired	0
Other adjustments	18
Goodwill, end of period	2,756
Reassigned goodwill	118
All Other
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	49
Goodwill Acquired	0
Other adjustments	5
Goodwill, end of period	$ 54