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Net Income Per Limited Partner Unit (Tables)
 6 Months Ended
Jun. 30, 2017
Partners' Capital Notes [Abstract]  
Schedule of Allocation of Net Income to Arrive at Net Income Per Limited Partner Unit
The following tables show the allocation of net income attributable to the Partnership to arrive at net income per limited partner unit:
 
 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
 
2017
 
2016
 
2017
 
2016
Net income
 
$
68.7

 
$
70.9

 
$
143.7

 
$
142.7

Less:
 
 
 
 
 
 
 
 
Net income attributable to Parent
 
1.0

 
4.6

 
3.0

 
8.4

Net income attributable to noncontrolling interests
 
2.2

 
2.5

 
4.4

 
15.2

Net income attributable to the Partnership
 
65.5

 
63.8

 
136.3

 
119.1

Less:
 
 

 
 

 
 

 
 

General Partner's distribution declared
 
14.3

 
4.7

 
26.3

 
7.6

Limited Partners' distribution declared on common units
 
53.9

 
27.4

 
105.5

 
50.4

Limited Partners' distribution declared on subordinated units
 
—

 
16.9

 
—

 
32.7

Income (less than) / in excess of distributions
 
$
(2.7
)
 
$
14.8

 
$
4.5

 
$
28.4
Schedule of Basic and Diluted Net Income Per Unit
 
 
Three Months Ended June 30, 2017
 
 
General Partner
 
Limited Partners' Common Units
 
Total
 
 
(in millions of dollars, except per unit data)
Distributions declared
 
$
14.3

 
$
53.9

 
$
68.2

Distributions in excess of income
 
—

 
(2.7
)
 
(2.7
)
Net income attributable to the Partnership
 
$
14.3

 
$
51.2

 
$
65.5

Weighted average units outstanding (in millions) (1):
 
 

 
 

 
 

Basic and diluted
 
 
 
177.4

 


Net income per Limited Partner Unit (in dollars):
 
 

 
 

 


Basic and diluted
 
 

 
$
0.29

 
 

 
 
Six Months Ended June 30, 2017
 
 
General Partner
 
Limited Partners' Common Units
 
Total
 
 
(in millions of dollars, except per unit data)
Distributions declared
 
$
26.3

 
$
105.5

 
$
131.8

Income in excess of distributions
 
0.1

 
4.4

 
4.5

Net income attributable to the Partnership
 
$
26.4

 
$
109.9

 
$
136.3

Weighted average units outstanding (in millions) (1):
 
 

 
 

 
 

Basic and diluted
 
 
 
177.3

 
 
Net income per Limited Partner Unit (in dollars):
 
 

 
 

 
 
Basic and diluted
 
 

 
$
0.62

 
 

(1) The subordinated units converted into common units on February 15, 2017 and were considered outstanding common units for the entire period with respect to the weighted average number of units outstanding.



 
 
Three Months Ended June 30, 2016
 
 
General Partner
 
Limited Partners' Common Units
 
Limited Partners' Subordinated Units
 
Total
 
 
(in millions of dollars, except per unit data)
Distributions declared
 
$
4.7

 
$
27.4

 
$
16.9

 
$
49.0

Income in excess of distributions
 
0.3

 
8.7

 
5.8

 
14.8

Net income attributable to the Partnership
 
$
5.0

 
$
36.1

 
$
22.7

 
$
63.8

Weighted average units outstanding (in millions):
 
 

 
 

 
 

 
 

Basic and diluted
 


 
102.6

 
67.5

 


Net income per Limited Partner Unit (in dollars):
 
 

 
 

 
 

 
 

Basic and diluted
 
 

 
$
0.35

 
$
0.34

 
 


 
 
Six Months Ended June 30, 2016
 
 
General Partner
 
Limited Partners' Common Units
 
Limited Partners' Subordinated Units
 
Total
 
 
(in millions of dollars, except per unit data)
Distributions declared
 
$
7.6

 
$
50.4

 
$
32.7

 
$
90.7

Income in excess of distributions
 
0.5

 
16.2

 
11.7

 
28.4

Net income attributable to the Partnership
 
$
8.1

 
$
66.6

 
$
44.4

 
$
119.1

Weighted average units outstanding (in millions):
 
 

 
 

 
 

 
 

Basic and diluted
 
 
 
93.8

 
67.5

 
 
Net income per Limited Partner Unit (in dollars):
 
 

 
 

 
 

 
 

Basic and diluted
 
 

 
$
0.71

 
$
0.66