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

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