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Equity and Distributions (Tables)
 12 Months Ended
Dec. 31, 2016
Equity and Distributions [Abstract]  
Summary of Changes in Outstanding Units
Partners’ equity reflects the various classes of limited partner interests (i.e., common units, including restricted common units) outstanding.  The following table summarizes changes in the number of our outstanding units since January 1, 2014:

 
Common
Units
(Unrestricted)
 
Restricted
Common
Units
 
Total
Common
Units
Number of units outstanding at January 1, 2014
 
1,864,148,802
 
 
7,221,214
 
 
1,871,370,016
Common units issued in connection with ATM program
 
1,590,334
 
 
--
 
 
1,590,334
Common units issued in connection with DRIP and EUPP
 
9,754,227
 
 
--
 
 
9,754,227
Common units issued in connection with Step 1 of Oiltanking acquisition
 
54,807,352
  
--
  
54,807,352
Common units issued in connection with the vesting and exercise of unit options
 
1,014,108
 
 
--
 
 
1,014,108
Common units issued in connection with the vesting of phantom unit awards
 
23,311
  
--
  
23,311
Common units issued in connection with the vesting of restricted common unit awards
 
2,634,074
 
 
(2,634,074)
 
 
--
Forfeiture of restricted common unit awards
 
--
 
 
(357,350)
 
 
(357,350)
Acquisition and cancellation of treasury units in connection with the vesting of equity-based awards
 
(894,383)
 
 
--
 
 
(894,383)
Other
 
17,202
  
--
  
17,202
Number of units outstanding at December 31, 2014
 
1,933,095,027
 
 
4,229,790
 
 
1,937,324,817
Common units issued in connection with ATM program
 
25,520,424
 
 
--
 
 
25,520,424
Common units issued in connection with DRIP and EUPP
 
12,793,913
 
 
--
 
 
12,793,913
Common units issued in connection with Step 2 of Oiltanking acquisition
 
36,827,517
  
--
  
36,827,517
Common units issued in connection with the vesting and exercise of unit options
 
396,158
 
 
--
 
 
396,158
Common units issued in connection with the vesting of phantom unit awards
 
618,395
  
--
  
618,395
Common units issued in connection with the vesting of restricted common unit awards
 
2,009,970
 
 
(2,009,970)
 
 
--
Forfeiture of restricted common unit awards
 
--
 
 
(259,300)
 
 
(259,300)
Acquisition and cancellation of treasury units in connection with the vesting of equity-based awards
 
(683,954)
 
 
--
 
 
(683,954)
Other
 
15,054
  
--
  
15,054
Number of units outstanding at December 31, 2015
 
2,010,592,504
 
 
1,960,520
 
 
2,012,553,024
Common units issued in connection with ATM program
 
87,867,037
 
 
--
 
 
87,867,037
Common units issued in connection with DRIP and EUPP
 
16,316,534
 
 
--
 
 
16,316,534
Common units issued in connection with the vesting of phantom unit awards
 
1,761,455
 
 
--
 
 
1,761,455
Common units issued in connection with the vesting of restricted common unit awards
 
1,234,502
 
 
(1,234,502)
 
 
--
Forfeiture of restricted common unit awards
 
--
 
 
(43,724)
 
 
(43,724)
Acquisition and cancellation of treasury units in connection with the vesting of equity-based awards
 
(1,000,619)
 
 
--
 
 
(1,000,619)
Other
 
134,707
 
 
--
 
 
134,707
Number of units outstanding at December 31, 2016
 
2,116,906,120
 
 
682,294
 
 
2,117,588,414
Components of Accumulated Other Comprehensive Income (Loss)
The following tables present the components of accumulated other comprehensive income (loss) as reported on our Consolidated Balance Sheets at the dates indicated:
 
 
 
Gains (Losses) on
Cash Flow Hedges
       
 
 
Commodity
Derivative
Instruments
  
Interest Rate
Derivative
Instruments
  
Other
  
Total
 
Balance, December 31, 2014
 
$
69.9
  
$
(314.8
)
 
$
3.3
  
$
(241.6
)
Other comprehensive income before reclassifications
  
214.9
   
--
   
0.4
   
215.3
 
Amounts reclassified from accumulated other comprehensive (income) loss
  
(228.2
)
  
35.3
   
--
   
(192.9
)
Total other comprehensive income (loss)
  
(13.3
)
  
35.3
   
0.4
   
22.4
 
Balance, December 31, 2015
  
56.6
   
(279.5
)
  
3.7
   
(219.2
)
Other comprehensive income (loss) before reclassifications
  
(193.8
)
  
42.3
   
(0.1
)
  
(151.6
)
Amounts reclassified from accumulated other comprehensive loss
  
53.4
   
37.4
   
--
   
90.8
 
Total other comprehensive income (loss)
  
(140.4
)
  
79.7
   
(0.1
)
  
(60.8
)
Balance, December 31, 2016
 
$
(83.8
)
 
$
(199.8
)
 
$
3.6
  
$
(280.0
)
Reclassifications out of Accumulated Other Comprehensive Income (Loss) Into Net Income
The following table presents reclassifications out of accumulated other comprehensive income (loss) into net income during the periods indicated:
 
 
  
 
For the Year Ended December 31,
 
 
 Location 
2016
  
2015
 
Losses (gains) on cash flow hedges:
       
Interest rate derivatives
Interest expense
 
$
37.4
  
$
35.3
 
Commodity derivatives
Revenue
  
53.6
   
(231.7
)
Commodity derivatives
Operating costs and expenses
  
(0.2
)
  
3.5
 
Total
 
 
$
90.8
  
$
(192.9
)
Components of Net Income Attributable to Noncontrolling Interests
The following table presents the components of net income attributable to noncontrolling interests as presented on our Statements of Consolidated Operations for the periods indicated:

 
 
For the Year Ended December 31,
 
 
 
2016
  
2015
  
2014
 
Limited partners of Oiltanking other than EPO
 
$
--
  
$
7.8
  
$
14.2
 
Joint venture partners
  
39.9
   
29.4
   
31.9
 
Total
 
$
39.9
  
$
37.2
  
$
46.1
 
Cash Distributions Paid to and Cash Contributions Received From Noncontrolling Interests
The following table presents cash distributions paid to and cash contributions received from noncontrolling interests as presented on our Statements of Consolidated Cash Flows and Statements of Consolidated Equity for the periods indicated:

 
 
For the Year Ended December 31,
 
 
 
2016
  
2015
  
2014
 
Cash distributions paid to noncontrolling interests:
         
Limited partners of Oiltanking other than EPO
 
$
--
  
$
8.1
  
$
7.7
 
Joint venture partners
  
47.4
   
39.9
   
40.9
 
Total
 
$
47.4
  
$
48.0
  
$
48.6
 
             
Cash contributions from noncontrolling interests:
            
Joint venture partners
 
$
20.4
  
$
54.0
  
$
4.0
 
Declared Quarterly Cash Distribution Rates
The following table presents Enterprise’s declared quarterly cash distribution rates per common unit with respect to the quarter indicated.  Actual cash distributions are paid by Enterprise within 45 days after the end of each fiscal quarter.

 
 
Distribution Per
Common Unit
 
Record
Date
Payment
Date
2014:
   
 
   
1st Quarter
 
$
0.3550
 
4/30/2014
5/7/2014
2nd Quarter
 
$
0.3600
 
7/31/2014
8/7/2014
3rd Quarter
 
$
0.3650
 
10/31/2014
11/7/2014
4th Quarter
 
$
0.3700
 
1/30/2015
2/6/2015
2015:
         
1st Quarter
 
$
0.3750
 
4/30/2015
5/7/2015
2nd Quarter
 
$
0.3800
 
7/31/2015
8/7/2015
3rd Quarter
 
$
0.3850
 
10/30/2015
11/6/2015
4th Quarter
 
$
0.3900
 
1/29/2016
2/5/2016
2016:
    
 
    
1st Quarter
 
$
0.3950
 
4/29/2016
5/6/2016
2nd Quarter
 
$
0.4000
 
7/29/2016
8/5/2016
3rd Quarter
 
$
0.4050
 
10/31/2016
11/7/2016
4th Quarter
 
$
0.4100
 
1/31/2017
2/7/2017