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Leases and Commitments
12 Months Ended
Dec. 31, 2011
Leases and Commitments  
Leases and Commitments
Leases and Commitments

We have entered into operating leases for certain warehouse facilities, automobiles and equipment. The future minimum obligations under operating leases having a noncancelable term in excess of one year are as follows:
 
Year Ending December 31
 
(Millions of dollars)
2012
$
167

2013
136

2014
114

2015
83

2016
54

Thereafter
128

Future minimum obligations
$
682


 
Consolidated rental expense under operating leases was $278 million, $296 million and $284 million in 2011, 2010 and 2009, respectively.

We have entered into long-term contracts for the purchase of pulp and utilities, principally electricity. Commitments under these contracts based on current prices are $709 million in 2012, $154 million in 2013, $44 million in 2014, $17 million in 2015 and $18 million in 2016. Total commitments beyond the year 2016 are $59 million.

Although we are primarily liable for payments on the above-mentioned leases and purchase commitments, our exposure to losses, if any, under these arrangements is not material.