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Supplemental Cash Flow Information
12 Months Ended
Dec. 31, 2011
Supplemental Cash Flow Information  
Supplemental Cash Flow Information

26. Supplemental Cash Flow Information

        The following table provides information regarding supplemental cash flow information (in thousands):

  Year ended December 31,  
 
  2011   2010   2009  

Supplemental disclosures of cash flow information:

                   

Cash paid for interest, net of amounts capitalized

  $ 112,780   $ 101,459   $ 85,817  

Cash paid for income taxes, net of refunds

    10,115     8,683     4,609  

Supplemental schedule of non-cash investing and financing activities:

                   

Accrued property, plant and equipment

  $ 87,098   $ 65,908   $ 60,738  

Interest capitalized on construction in progress

    1,121     2,766     12,228  

Issuance of common units for vesting of share-based payment awards

    5,412     7,238     9,402  

Issuance of Class B units for acquisition of non-controlling interest

    752,531