Intangible Assets and Goodwill (Details 2) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	$ 7,414
Impairments, beginning of period	(1,197)
Net goodwill, beginning of period	6,217
Goodwill impairment charge	0	$ 0
Other adjustments	(75)
Goodwill, end of period	7,339
Impairments, end of period	(1,197)
Net goodwill, end of period	6,142
Construction Industries
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	304
Impairments, beginning of period	(22)
Net goodwill, beginning of period	282
Goodwill impairment charge	0
Other adjustments	2
Goodwill, end of period	306
Impairments, end of period	(22)
Net goodwill, end of period	284
Resource Industries
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	4,172
Impairments, beginning of period	(1,175)
Net goodwill, beginning of period	2,997
Goodwill impairment charge	0
Other adjustments	(50)
Goodwill, end of period	4,122
Impairments, end of period	(1,175)
Net goodwill, end of period	2,947
Energy & Transportation
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	2,882
Other adjustments	(28)
Goodwill, end of period	2,854
All Other
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	56
Other adjustments	1
Goodwill, end of period	$ 57