Statements Of Consolidated and Combined Cash Flows - USD ($)
$ in Millions |
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Net Income |
$ 530.2
|
|
|
| Adjustments to Reconcile Net Income to Net Cash from Operating Activities: |
|
|
|
| Depreciation and amortization |
135.0
|
|
|
| Deferred income taxes and investment tax credits |
10.5
|
|
|
| Deferred revenue |
4.2
|
|
|
| Equity-based compensation expense and profit sharing contribution |
5.6
|
|
|
| Gain on sale of assets and impairment, net |
(54.7)
|
|
|
| Equity earnings in unconsolidated affiliates |
(60.2)
|
|
|
| Amortization of debt related costs |
0.4
|
|
|
| AFUDC equity |
(28.3)
|
|
|
| Distributions of earnings received from equity investees |
57.2
|
|
|
| Accounts receivable |
(11.0)
|
|
|
| Accounts receivable-affiliated |
21.6
|
|
|
| Accounts payable |
(10.0)
|
|
|
| Accounts payable-affiliated |
30.1
|
|
|
| Customer deposits |
(22.9)
|
|
|
| Taxes accrued |
19.5
|
|
|
| Exchange gas receivable/payable |
0.0
|
|
|
| Other accruals |
10.5
|
|
|
| Prepayments and other current assets |
(13.5)
|
|
|
| Regulatory assets/liabilities |
27.6
|
|
|
| Postretirement and postemployment benefits |
(5.2)
|
|
|
| Deferred charges and other noncurrent assets |
(13.8)
|
|
|
| Other noncurrent liabilities |
(5.1)
|
|
|
| Net Cash Flows from Operating Activities |
627.7
|
|
|
| Investing Activities |
|
|
|
| Capital expenditures |
(1,106.6)
|
|
|
| Insurance recoveries |
2.1
|
|
|
| Changes in short-term lendings-affiliated |
(24.3)
|
|
|
| Proceeds from disposition of assets |
84.1
|
|
|
| Contributions to equity investees |
(1.4)
|
|
|
| Distributions from equity investees |
16.0
|
|
|
| Other investing activities |
(22.4)
|
|
|
| Net Cash Flows used for Investing Activities |
(1,052.5)
|
|
|
| Financing Activities |
|
|
|
| Change in short-term borrowings-affiliated |
15.0
|
|
|
| Change in short-term borrowings-affiliated |
(207.2)
|
|
|
| Issuance of long-term debt-affiliated |
0.0
|
|
|
| Payments of long-term debt-affiliated, including current portion |
(959.6)
|
|
|
| Proceeds from issuance of common units, net of offering costs |
1,168.4
|
|
|
| Distribution of IPO proceeds to parent |
500.0
|
|
|
| Contribution of capital from parent |
(1,217.3)
|
|
|
| Distribution to parent |
0.0
|
|
|
| Quarterly distributions to unitholders |
43.4
|
|
|
| Distribution to noncontrolling interest in Columbia OpCo |
187.3
|
|
|
| Net Cash Flows from Financing Activities |
503.2
|
|
|
| Change in cash and cash equivalents |
78.4
|
|
|
| Cash and cash equivalents at beginning of period |
78.9
|
|
|
| Predecessor |
|
|
|
| Net Income |
|
$ 269.1
|
$ 266.9
|
| Adjustments to Reconcile Net Income to Net Cash from Operating Activities: |
|
|
|
| Depreciation and amortization |
|
118.6
|
106.9
|
| Deferred income taxes and investment tax credits |
|
139.3
|
179.9
|
| Deferred revenue |
|
1.6
|
(0.5)
|
| Equity-based compensation expense and profit sharing contribution |
|
6.3
|
2.2
|
| Gain on sale of assets and impairment, net |
|
(34.5)
|
(18.6)
|
| Equity earnings in unconsolidated affiliates |
|
(46.6)
|
(35.9)
|
| Amortization of debt related costs |
|
0.0
|
0.0
|
| AFUDC equity |
|
(11.0)
|
(6.8)
|
| Distributions of earnings received from equity investees |
|
37.8
|
32.1
|
| Accounts receivable |
|
(20.3)
|
2.5
|
| Accounts receivable-affiliated |
|
2.2
|
(7.6)
|
| Accounts payable |
|
2.8
|
5.5
|
| Accounts payable-affiliated |
|
8.6
|
16.3
|
| Customer deposits |
|
77.5
|
1.3
|
| Taxes accrued |
|
11.8
|
(28.5)
|
| Exchange gas receivable/payable |
|
1.1
|
(0.5)
|
| Other accruals |
|
0.6
|
0.4
|
| Prepayments and other current assets |
|
(4.4)
|
21.7
|
| Regulatory assets/liabilities |
|
9.0
|
42.6
|
| Postretirement and postemployment benefits |
|
2.2
|
(113.3)
|
| Deferred charges and other noncurrent assets |
|
(4.3)
|
2.5
|
| Other noncurrent liabilities |
|
0.7
|
(15.1)
|
| Net Cash Flows from Operating Activities |
|
568.1
|
454.0
|
| Investing Activities |
|
|
|
| Capital expenditures |
|
(747.2)
|
(674.8)
|
| Insurance recoveries |
|
11.3
|
6.4
|
| Changes in short-term lendings-affiliated |
|
(61.6)
|
(10.0)
|
| Proceeds from disposition of assets |
|
9.3
|
15.4
|
| Contributions to equity investees |
|
(69.2)
|
(125.5)
|
| Distributions from equity investees |
|
0.0
|
0.0
|
| Other investing activities |
|
(7.1)
|
(8.9)
|
| Net Cash Flows used for Investing Activities |
|
(864.5)
|
(797.4)
|
| Financing Activities |
|
|
|
| Change in short-term borrowings-affiliated |
|
0.0
|
0.0
|
| Change in short-term borrowings-affiliated |
|
(472.3)
|
391.0
|
| Issuance of long-term debt-affiliated |
|
768.9
|
65.1
|
| Payments of long-term debt-affiliated, including current portion |
|
0.0
|
0.0
|
| Proceeds from issuance of common units, net of offering costs |
|
0.0
|
0.0
|
| Distribution of IPO proceeds to parent |
|
0.0
|
0.0
|
| Contribution of capital from parent |
|
0.0
|
0.0
|
| Distribution to parent |
|
0.0
|
(113.0)
|
| Quarterly distributions to unitholders |
|
0.0
|
0.0
|
| Distribution to noncontrolling interest in Columbia OpCo |
|
0.0
|
0.0
|
| Net Cash Flows from Financing Activities |
|
296.6
|
343.1
|
| Change in cash and cash equivalents |
|
0.2
|
(0.3)
|
| Cash and cash equivalents at beginning of period |
$ 0.5
|
0.3
|
0.6
|
| Cash and cash equivalents at beginning of period |
|
$ 0.5
|
$ 0.3
|