Revenue (Tables)

9 Months Ended

Sep. 30, 2018

Revenue [Abstract]

Disaggregation of Revenue

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Display products	$	815	$	767	$	2,315	$	2,250
Telecommunication products		1,117		917		3,026		2,617
Specialty glass products		459		373		1,080		1,010
Environmental substrate and filter products		331		277		970		815
Life science products		231		223		708		654
All Other		55		50		156		133
	$	3,008	$	2,607	$	8,255	$	7,479