Statements Of Consolidated and Combined Operations - USD ($) shares in Millions, $ in Millions |
3 Months Ended |
6 Months Ended |
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
| Operating Revenues |
|
|
|
|
| Transportation revenues |
$ 237.3
|
|
$ 485.2
|
|
| Transportation revenues-affiliated |
18.4
|
|
47.1
|
|
| Storage revenues |
36.2
|
|
72.8
|
|
| Storage revenues-affiliated |
12.9
|
|
26.2
|
|
| Other revenues |
10.8
|
|
23.5
|
|
| Total Operating Revenues |
315.6
|
|
654.8
|
|
| Operating Expenses |
|
|
|
|
| Operation and maintenance |
138.0
|
|
248.0
|
|
| Operation and maintenance-affiliated |
38.6
|
|
74.7
|
|
| Depreciation and amortization |
33.0
|
|
65.3
|
|
| Gain on sale of assets |
(8.3)
|
|
(13.6)
|
|
| Property and other taxes |
19.1
|
|
38.1
|
|
| Total Operating Expenses |
220.4
|
|
412.5
|
|
| Equity Earnings in Unconsolidated Affiliates |
14.0
|
|
28.9
|
|
| Operating Income |
109.2
|
|
271.2
|
|
| Other Income (Deductions) |
|
|
|
|
| Interest expense-affiliated |
(6.3)
|
|
(17.7)
|
|
| Other, net |
4.9
|
|
9.2
|
|
| Total Other Deductions, net |
(1.4)
|
|
(8.5)
|
|
| Income before Income Taxes |
107.8
|
|
262.7
|
|
| Income Taxes |
0.0
|
|
23.7
|
|
| Net Income |
107.8
|
|
239.0
|
|
| Income (Loss) Attributable to Noncontrolling Interest |
91.5
|
|
166.7
|
|
| Net Income (Loss) Allocated to Limited Partners |
$ 16.3
|
|
$ 29.6
|
|
| Net income attributable to partners' ownership interest subsequent to IPO per limited partner unit (basic and diluted) |
|
|
|
|
| Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax |
$ 0.16
|
|
$ 0.29
|
|
| Weighted average limited partner units outstanding (basic and diluted) |
|
|
|
|
| Weighted Average Number of Shares Outstanding, Basic and Diluted |
100.6
|
|
100.6
|
|
| Predecessor [Member] |
|
|
|
|
| Operating Revenues |
|
|
|
|
| Transportation revenues |
|
$ 260.5
|
|
$ 507.4
|
| Transportation revenues-affiliated |
|
18.9
|
|
47.5
|
| Storage revenues |
|
36.0
|
|
72.3
|
| Storage revenues-affiliated |
|
13.2
|
|
26.9
|
| Other revenues |
|
14.8
|
|
34.8
|
| Total Operating Revenues |
|
343.4
|
|
688.9
|
| Operating Expenses |
|
|
|
|
| Operation and maintenance |
|
176.1
|
|
313.9
|
| Operation and maintenance-affiliated |
|
29.5
|
|
57.8
|
| Depreciation and amortization |
|
28.8
|
|
58.5
|
| Gain on sale of assets |
|
(0.3)
|
|
(17.8)
|
| Property and other taxes |
|
17.2
|
|
35.7
|
| Total Operating Expenses |
|
251.3
|
|
448.1
|
| Equity Earnings in Unconsolidated Affiliates |
|
11.1
|
|
20.9
|
| Operating Income |
|
103.2
|
|
261.7
|
| Other Income (Deductions) |
|
|
|
|
| Interest expense-affiliated |
|
(12.6)
|
|
(24.7)
|
| Other, net |
|
2.6
|
|
4.4
|
| Total Other Deductions, net |
|
(10.0)
|
|
(20.3)
|
| Income before Income Taxes |
|
93.2
|
|
241.4
|
| Income Taxes |
|
34.2
|
|
89.9
|
| Net Income |
|
$ 59.0
|
|
$ 151.5
|
| Common Units [Member] |
|
|
|
|
| Other Income (Deductions) |
|
|
|
|
| Net Income (Loss) Allocated to Limited Partners |
$ 9.0
|
|
$ 16.1
|
|
| Net income attributable to partners' ownership interest subsequent to IPO per limited partner unit (basic and diluted) |
|
|
|
|
| Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax |
$ 0.17
|
|
$ 0.30
|
|
| Weighted average limited partner units outstanding (basic and diluted) |
|
|
|
|
| Weighted Average Number of Shares Outstanding, Basic and Diluted |
53.8
|
|
53.8
|
|
| Subordinated Units [Member] |
|
|
|
|
| Other Income (Deductions) |
|
|
|
|
| Net Income (Loss) Allocated to Limited Partners |
$ 7.3
|
|
$ 13.5
|
|
| Net income attributable to partners' ownership interest subsequent to IPO per limited partner unit (basic and diluted) |
|
|
|
|
| Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax |
$ 0.16
|
|
$ 0.29
|
|
| Weighted average limited partner units outstanding (basic and diluted) |
|
|
|
|
| Weighted Average Number of Shares Outstanding, Basic and Diluted |
46.8
|
|
46.8
|
|