Environmental Matters, Litigation and Product Warranties - Additional Information (Details) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2018 USD ($) defendent case federal_superfund_site	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Environmental Matters, Litigation and Product Warranties [Abstract]
Number of Federal Super Fund sites | federal_superfund_site	1
Environmental remediation accrual, discounted basis	$ 17	$ 17
Portion of environmental remediation costs recorded in other current liabilities	3	3
Portion of environmental remediation costs recorded in deferred credits and other liabilities	$ 14	$ 14
Weighted average discount rate	2.60%	2.60%
Environmental remediation accrual, undiscounted basis	$ 21	$ 21
Environmental Remediation, 2018	2	2
Environmental Remediation, 2019	3	3
Environmental Remediation, 2020	1	1
Environmental Remediation, 2021	1	1
Environmental Remediation, 2022	1	1
Environmental Remediation, Thereafter	13	13
Litigation reserve	$ 68	68	$ 132
Payments for litigation		$ 64
Number of legal cases (less than) | case	500
Number of defendants in many asbestos related cases | defendent	100