Contingencies (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($) claim site	Jun. 30, 2018 USD ($) claim	Dec. 31, 2018 USD ($)
Accrual for environmental loss contingencies [Abstract]
Waste disposal sites with potential liability under the Comprehensive Environmental Response, Compensation and Liability Act | site	27
Accrual for indicated environmental liabilities	$ 8		$ 9
Loss Contingency Claims [Roll Forward]
Loss Contingency, Range of Possible Loss, Portion Not Accrued	100		100
Loss Contingency Accrual [Roll Forward]
Beginning asbestos liability	805	$ 828
Claim resolution costs and associated defense costs	(22)	(28)
Ending asbestos liability	$ 783	$ 800
Asbestos Issue [Member]
Loss Contingency Claims [Roll Forward]
Beginning Claims | claim	8,598	9,225
New Claims Received | claim	1,111	1,020
Dismissed Claims | claim	(793)	(786)
Settled Claims | claim	(154)	(189)
Ending Claims | claim	8,762	9,270
Company paid in defense and indemnity in advance of insurers reimbursement	$ 596		574
Cash and notes received from insurers	272		271
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid	15	$ 28
Assets:
Insurance Settlements Receivable, Noncurrent	324		303
Deferred asbestos-related insurance asset	62		83
Total insurance assets	386		386
Liabilities:
Accounts payable and accrued expenses	49		50
Other non-current liabilities	734		755
Total accrued liabilities	$ 783		$ 805