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Equity and Distributions (Tables)
 3 Months Ended
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