Goodwill and Intangible Assets - Acquired Intangible Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Acquired intangible assets disclosures
Total gross carrying amount	$ 8,114	$ 8,261
Total accumulated amortization	(2,713)	(2,520)
Total finite-lived intangible assets - net	5,401	5,741
Non-amortizable intangible assets (primarily tradenames)	632	638
Total intangible assets - net	$ 6,033	6,379
Minimum
Acquired intangible assets disclosures
Indefinite lived tradenames years in existence	55 years
Customer related intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	$ 4,201	4,316
Total accumulated amortization	(1,261)	(1,180)
Patents
Acquired intangible assets disclosures
Total gross carrying amount	525	538
Total accumulated amortization	(494)	(499)
Other technology-based intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	2,093	2,124
Total accumulated amortization	(522)	(435)
Definite-lived tradenames
Acquired intangible assets disclosures
Total gross carrying amount	1,175	1,158
Total accumulated amortization	(349)	(316)
Other amortizable intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	120	125
Total accumulated amortization	$ (87)	$ (90)