Revenue (Tables)

9 Months Ended

Sep. 30, 2019

Revenue [Abstract]

Disaggregation of Revenue

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
Display products	$	780	$	815	$	2,395	$	2,315
Telecommunication products		1,008		1,117		3,162		3,026
Specialty glass products		463		459		1,141		1,080
Environmental substrate and filter products		380		331		1,084		970
Life science products		250		231		744		708
All Other		53		55		160		156
Total Revenue	$	2,934	$	3,008	$	8,686	$	8,255