Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Loss Contingencies by Contingency

The following table summarizes the activity in the Company’s accrued obligations for asbestos and other personal injury matters (in millions):

	Three Months Ended June 30,
	2018			2017
Beginning balance	$	305		$	367
Accruals / changes in estimates	27			4
Payments	(37		)	(7		)
Ending balance	$	295		$	364

	Six Months Ended June 30,
	2018			2017
Beginning balance	$	307		$	367
Accruals / changes in estimates	34			18
Payments	(46		)	(21		)
Ending balance	$	295		$	364

Accrued Obligations for Environmental Matters

The following table summarizes the activity in the Company’s accrued obligations for environmental matters (in millions):

	Three Months Ended June 30,
	2018			2017
Beginning balance	$	314		$	335
Accruals / changes in estimates	1			(2		)
Payments	(5		)	(7		)
Ending balance	$	310		$	326

	Six Months Ended June 30,
	2018			2017
Beginning balance	$	317		$	342
Accruals / changes in estimates	2			(1		)
Payments	(9		)	(15		)
Ending balance	$	310		$	326