Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments and Contingencies

Minimum lease payments under capital and operating leases with non-cancelable terms in excess of one year

(Millions)	CapitalLeases		OperatingLeases
2012	$	19	$	155
2013	20		113
2014	18		87
2015	5		55
2016	4		40
After 2016	34		52
Total	$	100	$	502
Less: Amounts representing interest	8
Present value of future minimum lease payments	92
Less: Current obligations under capital leases	13
Long-term obligations under capital leases	$	79

Accrued Liabilities and Insurance Receivables Related to Legal Proceedings

At December 31(Millions)	2011	2010	2009
Respirator mask/asbestos liabilities	130	126	138
Respirator mask/asbestos insurance receivables	121	122	143
Environmental remediation liabilities	28	24	31
Environmental remediation insurance receivables	15	15	15
Other environmental liabilities	75	90	117