Intangible Assets and Goodwill (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	$ 7,393
Impairments, beginning of period	(1,197)
Net goodwill, beginning of period	6,196
Goodwill impairment charge	0	$ 0
Other adjustments	(56)
Goodwill, end of period	7,337
Impairments, end of period	(1,197)
Net goodwill, end of period	6,140
Construction Industries
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	306
Impairments, beginning of period	(22)
Net goodwill, beginning of period	284
Goodwill impairment charge	0
Other adjustments	(1)
Goodwill, end of period	305
Impairments, end of period	(22)
Net goodwill, end of period	283
Resource Industries
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	4,156
Impairments, beginning of period	(1,175)
Net goodwill, beginning of period	2,981
Goodwill impairment charge	0
Other adjustments	(38)
Goodwill, end of period	4,118
Impairments, end of period	(1,175)
Net goodwill, end of period	2,943
Energy & Transportation
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	2,875
Other adjustments	(17)
Goodwill, end of period	2,858
All Other
Changes in carrying amount of goodwill by reportable segment:
Goodwill, beginning of period	56
Other adjustments	0
Goodwill, end of period	$ 56