Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 26,874
Measurement period adjustments	54
Acquisitions	115
Foreign currency translation	(115)
Goodwill, Ending Balance	26,820
Americas
Goodwill [Roll Forward]
Goodwill, Beginning Balance	9,174
Measurement period adjustments	(280)
Acquisitions	115
Foreign currency translation	(6)
Goodwill, Ending Balance	9,563
EMEA
Goodwill [Roll Forward]
Goodwill, Beginning Balance	10,960
Measurement period adjustments	0
Acquisitions	0
Foreign currency translation	(138)
Goodwill, Ending Balance	10,822
APAC
Goodwill [Roll Forward]
Goodwill, Beginning Balance	5,295
Measurement period adjustments	330
Acquisitions	0
Foreign currency translation	50
Goodwill, Ending Balance	5,015
Engineering
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,075
Measurement period adjustments	0
Acquisitions	0
Foreign currency translation	0
Goodwill, Ending Balance	1,075
Other
Goodwill [Roll Forward]
Goodwill, Beginning Balance	370
Measurement period adjustments	4
Acquisitions	0
Foreign currency translation	(21)
Goodwill, Ending Balance	$ 345

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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