Intangible Assets and Goodwill (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 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	(26)
Goodwill, end of period	7,388
Impairments, end of period	(1,197)
Net goodwill, end of period	6,191
Goodwill	6,217
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	(1)
Goodwill, end of period	303
Impairments, end of period	(22)
Net goodwill, end of period	281
Goodwill	282
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	(14)
Goodwill, end of period	4,158
Impairments, end of period	(1,175)
Net goodwill, end of period	2,983
Goodwill	2,997
Energy & Transportation
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	2,882
Other adjustments	(10)
Goodwill, end of period	2,872
All Other
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	56
Other adjustments	(1)
Goodwill, end of period	$ 55