Net Income Per Limited Partner Unit (Tables)
 9 Months Ended
Sep. 30, 2015
Net Income Per Limited Partner Unit [Abstract]  
Schedule of Undistributed Net Income
 
Three Months Ended
September 30,
 
Nine Months Ended September 30,(1)
(in millions)
2015
 
2015
Net income attributable to limited partners
$
22.0

 
$
51.6

Less:
 
 
 
Limited partners' distribution on common units
9.3

 
23.2

Limited partners' distribution on subordinated units
8.1

 
20.3

Distribution on incentive distribution rights
—

 
—

Net income in excess of distribution
$
4.6

 
$
8.1


 (1) Net income attributable to limited partners and in excess of distribution is for the period subsequent to the IPO.
Schedule Of Net Income Per Limited Partner Unit
Three Months Ended September 30, 2015
(in millions, except per unit data)
Limited Partners' Common Units
 
Limited Partners' Subordinated Units
 
Incentive Distribution Rights
 
Total
Net income attributable to limited partners
 
 
 
 
 
 
 
Distribution
$
9.3

 
$
8.1

 
$
—

 
$
17.4

Net income in excess of distribution
2.5

 
2.1

 
—

 
4.6

Net income attributable to limited partners
$
11.8

 
$
10.2

 
$
—

 
$
22.0

 
 
 
 
 
 
 
 
Weighted average limited partner units outstanding
 
 
 
 
 
 
 
Basic and diluted
53.8

 
46.8

 
—

 
100.6

Net income attributable to partners' ownership interest per limited partner unit
 
 
 
 
 
 
 
Basic and diluted
$
0.22

 
$
0.22

 
$
—

 
$
0.22

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Nine Months Ended September 30, 2015
(in millions, except per unit data)
Limited Partners' Common Units
 
Limited Partners' Subordinated Units
 
Incentive Distribution Rights
 
Total
Net income attributable to limited partners subsequent to IPO
 
 
 
 
 
 
 
Distribution
$
23.2

 
$
20.3

 
$
—

 
$
43.5

Net income subsequent to IPO in excess of distribution
4.7

 
3.4

 
—

 
8.1

Net income attributable to limited partners subsequent to IPO
$
27.9

 
$
23.7

 
$
—

 
$
51.6

 
 
 
 
 
 
 
 
Weighted average limited partner units outstanding
 
 
 
 
 
 
 
Basic and diluted
53.8

 
46.8

 
—

 
100.6

Net income attributable to partners' ownership interest subsequent to IPO per limited partner unit
 
 
 
 
 
 
 
Basic and diluted
$
0.52

 
$
0.51

 
$
—

 
$
0.51