Acquisitions and Divestitures - Acquisitions (Details) $ in Millions	1 Months Ended	3 Months Ended
	Feb. 28, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)
Business Acquisitions Information
Purchased finite-lived intangible assets		$ 461
Purchased goodwill		580
Supplemental information:
Cash paid, net of cash acquired		704
Net sales		7,863	$ 8,278
Operating loss		$ (1,136)	$ (1,007)
Number of business combinations completed			0
Maximum
Business Acquisitions Information
Intangible assets useful life (in years)		15 years
Minimum
Business Acquisitions Information
Intangible assets useful life (in years)		6 years
Weighted average
Business Acquisitions Information
Intangible assets useful life (in years)		12 years
M*Modal
Business Acquisitions Information
Accounts receivable		$ 77
Other current assets		16
Property, plant and equipment		9
Purchased goodwill		580
Other assets		55
Accounts payable and other liabilities		(113)
Interest bearing debt		(251)
Deferred tax asset/(liability)		(130)
Net assets acquired		704
Supplemental information:
Cash paid	$ 700	708
Less: Cash acquired		4
Cash paid, net of cash acquired		704
Assumed debt	$ 300
Net sales		50
Operating loss		20
M*Modal | Customer related intangible assets
Business Acquisitions Information
Purchased finite-lived intangible assets		$ 290
Intangible assets useful life (in years)		15 years
M*Modal | Definite-lived tradenames
Business Acquisitions Information
Purchased finite-lived intangible assets		$ 11
Intangible assets useful life (in years)		6 years
M*Modal | Other amortizable intangible assets
Business Acquisitions Information
Purchased finite-lived intangible assets		$ 160
Intangible assets useful life (in years)		6 years