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Equity and Distributions (Tables) | 3 Months Ended
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Mar. 31, 2013
Equity and Distributions [Abstract] |
Summary of Changes in Outstanding Units | Partners' equity reflects the various classes of limited partner interests (common units, including restricted common units, and Class B units) that we have outstanding. The following table summarizes changes in the number of our common units outstanding during the three months ended March 31, 2013:
|  | Common Units (Unrestricted) |  |  | Restricted Common Units |  |  | Total Common Units |
Number of units outstanding at December 31, 2012 |  |  | 894,919,851 |  |  |  | 3,893,486 |  |  |  | 898,813,337 |
Common units issued in connection with underwritten offering |  |  | 9,200,000 |  |  |  | -- |  |  |  | 9,200,000 |
Common units issued in connection with DRIP and EUPP |  |  | 1,275,229 |  |  |  | -- |  |  |  | 1,275,229 |
Common units issued in connection with the vesting of unit options |  |  | 168,628 |  |  |  | -- |  |  |  | 168,628 |
Common units issued in connection with the vesting of restricted common unit awards |  |  | 939,226 |  |  |  | (939,226 | ) |  |  | -- |
Restricted common unit awards issued |  |  | -- |  |  |  | 1,723,576 |  |  |  | 1,723,576 |
Forfeiture of restricted common unit awards |  |  | -- |  |  |  | (59,460 | ) |  |  | (59,460 | )
Acquisition and cancellation of treasury units in connection with the vesting of equity-based awards |  |  | (315,783 | ) |  |  | -- |  |  |  | (315,783 | )
Number of units outstanding at March 31, 2013 |  |  | 906,187,151 |  |  |  | 4,618,376 |  |  |  | 910,805,527 |
Components of Accumulated Other Comprehensive Income (Loss) | The following table presents the components of accumulated other comprehensive income (loss) as reported on our Unaudited Condensed Consolidated Balance Sheets at the dates indicated:
|  | Gains and Losses on Cash Flow Hedges |  |  |  |  |  |  |  |  |  |
|  | Commodity Derivative Instruments |  |  | Interest Rate Derivative Instruments |  |  | Foreign Currency Translation Adjustment |  |  | Postretirement Benefit Plans |  |  | Total |
Balance, December 31, 2012 |  | $ | 10.1 |  |  | $ | (383.0 | ) |  | $ | 1.7 |  |  | $ | 0.8 |  |  | $ | (370.4 | )
Other comprehensive income before reclassifications |  |  | (47.6 | ) |  |  | 6.7 |  |  |  | -- |  |  |  | -- |  |  |  | (40.9 | )
Amounts reclassified from accumulated other comprehensive income |  |  | 7.3 |  |  |  | 5.9 |  |  |  | -- |  |  |  | -- |  |  |  | 13.2 |
Total other comprehensive income |  |  | (40.3 | ) |  |  | 12.6 |  |  |  | -- |  |  |  | -- |  |  |  | (27.7 | )
Balance, March 31, 2013 |  | $ | (30.2 | ) |  | $ | (370.4 | ) |  | $ | 1.7 |  |  | $ | 0.8 |  |  | $ | (398.1 | )
Reclassification out of Accumulated Other Comprehensive Income | The following table presents reclassifications out of accumulated other comprehensive income into net income during the three months ended March 31, 2013:
| Location |  |  |
Losses (gains) on cash flow hedges: |  |  |  |
Interest rate derivatives | Interest expense |  | $ | 5.9 |
Commodity derivatives | Revenue |  |  | 7.7 |
Commodity derivatives | Operating costs and expenses |  |  | (0.4 | )
Total |  |  | $ | 13.2 |
Declared Quarterly Cash Distribution Rates | The following table presents our declared quarterly cash distribution rates per common unit with respect to the quarter indicated:
|  | Distribution Per Common Unit |  | Record Date | Payment Date
2013 |  |  |  |  |
1st Quarter |  | $ | 0.6700 |  | 04/30/13 | 05/07/13

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