| Current assets |
| Cash and cash equivalents |
800.51M |
| Accounts receivable - trade, net |
213.11M |
| Derivative instruments |
1.45M |
| Other current assets |
121.09M |
| Total current assets |
1.14B |
| Noncurrent assets |
| Oil and natural gas properties (successful efforts method) |
18.19B |
| Less accumulated depletion and amortization |
-12.68B |
| Oil and natural gas properties, successful efforts method, net |
5.52B |
| Other property and equipment |
742.26M |
| Less accumulated depreciation |
| Other property and equipment, net |
| Derivative instruments |
0 |
| Other noncurrent assets |
35.29M |
| Noncurrent assets, excluding property, total |
240.49M |
| Total noncurrent assets |
6.27B |
| Total assets |
7.4B |
| Current liabilities |
| Accounts payable and accrued expenses |
| Derivative instruments |
1.78M |
| Other accrued liabilities |
46.3M |
| Total current liabilities |
3.24B |
| Noncurrent liabilities |
| Senior notes, net |
| Derivative instruments |
1.2M |
| Other noncurrent liabilities |
571.12M |
| Total noncurrent liabilities |
| Commitments and contingencies (Note 10) |
| Unitholders' capital |
| 176,980,978 units and 159,009,795 units issued and outstanding at June 30, 2011, and December 31, 2010, respectively |
| Accumulated income |
-6.95B |
| Total unitholders' capital |
| Total liabilities and unitholders' capital |
7.4B |
