Asbestos-Related Liabilities (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($) inactive_claim	Dec. 31, 2015
Liability for Asbestos and Environmental Claims [Abstract]
Holding period for insulation operations (in days)	90 days
Liability for asbestos and environmental claims net claims paid	$ 12
Inactive claims (in claims) | inactive_claim	19,000
Accrued asbestos claims and related legal costs	$ 254
Unasserted claims	$ 205
Percentage of claims that do not specify damages		82.00%