Commitments and Contingencies (Liability and Receivable balances) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Respirator Mask/Asbestos Litigation
Loss contingencies
Accrued loss contingency reserve	$ 163	$ 130
Insurance receivables	89	121
Respirator Mask/Asbestos litigation - Excluding Aearo Technologies
Loss contingencies
Accrued loss contingency reserve	135
Respirator Mask/Asbestos Litigation - Aearo Technologies
Loss contingencies
Accrued loss contingency reserve	28
Environmental Matters - Remediation
Loss contingencies
Accrued loss contingency reserve	29	28
Insurance receivables	11	15
Environmental Matters - Other Environmental Litigation
Loss contingencies
Accrued loss contingency reserve	62	75
Insurance receivables	$ 15	$ 0