Net Income Per Limited Partner Unit (Schedule of Net Income Per Limited Partner Unit) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions |
2 Months Ended |
3 Months Ended |
11 Months Ended |
12 Months Ended |
Mar. 31, 2015 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2015 |
Dec. 31, 2015 |
| Schedule Of Earnings Per Unit [Line Items] |
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| Partners' Capital Account, Distributions |
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$ 61.6
|
| Undistributed Earnings, Basic |
[1] |
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12.4
|
| Net Income (Loss) Allocated to Limited Partners |
|
$ 13.3
|
$ 22.4
|
$ 22.0
|
$ 16.3
|
|
$ 74.0
|
$ 74.0
|
| Weighted Average Number of Shares Outstanding, Basic and Diluted |
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100.6
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| Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax |
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$ 0.74
|
| Common Units |
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| Schedule Of Earnings Per Unit [Line Items] |
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| Distribution Made to Limited Partner, Cash Distributions Declared |
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$ 32.9
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| Undistributed Earnings, Basic |
[1] |
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6.7
|
| Net Income (Loss) Allocated to Limited Partners |
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|
|
|
|
|
|
$ 39.6
|
| Weighted Average Number of Shares Outstanding, Basic and Diluted |
|
|
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|
|
|
|
53.8
|
| Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax |
|
|
$ 0.22
|
$ 0.22
|
$ 0.17
|
$ 0.13
|
|
$ 0.74
|
| Subordinated Units |
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| Schedule Of Earnings Per Unit [Line Items] |
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| Distribution Made to Limited Partner, Cash Distributions Declared |
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|
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$ 28.7
|
| Undistributed Earnings, Basic |
[1] |
|
|
|
|
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|
5.1
|
| Net Income (Loss) Allocated to Limited Partners |
|
|
|
|
|
|
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$ 33.8
|
| Weighted Average Number of Shares Outstanding, Basic and Diluted |
|
|
|
|
|
|
|
46.8
|
| Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax |
|
|
$ 0.22
|
$ 0.22
|
$ 0.16
|
$ 0.13
|
|
$ 0.72
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| Incentive Distribution Rights |
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| Schedule Of Earnings Per Unit [Line Items] |
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| Incentive Distribution, Distribution |
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$ 0.0
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| Undistributed Earnings, Basic |
[1] |
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0.6
|
| Net Income (Loss) Allocated to Limited Partners |
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|
|
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|
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$ 0.6
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