Commitments and Contingencies (Liability and Receivable balances) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Respirator Mask/Asbestos Litigation
Loss contingencies
Accrued loss contingency reserve	$ 160	$ 130
Insurance receivables	136	121
Respirator Mask/Asbestos litigation - Excluding Aearo Technologies
Loss contingencies
Accrued loss contingency reserve	131
Respirator Mask/Asbestos Litigation - Aearo Technologies
Loss contingencies
Accrued loss contingency reserve	29
Environmental Matters - Remediation
Loss contingencies
Accrued loss contingency reserve	28	28
Insurance receivables	15	15
Environmental Matters - Other Environmental Liabilities
Loss contingencies
Accrued loss contingency reserve	$ 66	$ 75