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CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Cash Generated from Operations        
Net income $ 57.0 $ 75.0 $ 157.0 $ 177.0
Depreciation and amortization 19.0 24.0 39.0 48.0
Amortization of debt issue costs reported as interest expense     1.0 1.0
Amortization of realized losses       2.0
Equity earnings from equity investments (Note 5) (30.0) (36.0) (84.0) (95.0)
Distributions received from operating activities of equity investments (Note 5)     112.0 96.0
Change in other long term liabilities       (1.0)
Equity allowance for funds used during construction (AFUDC equity)     (1.0)  
Change in operating working capital (Note 11)     4.0 (5.0)
Cash generated from operations     228.0 223.0
Investing Activities        
Investment in Great Lakes (Note 5)     (5.0) (4.0)
Distribution received from return of investment (Note 5) 52.6   55.2  
Capital expenditures     (29.0) (9.0)
Customer advances for construction     1.0  
Investing activities     22.0 (8.0)
Financing Activities        
Distributions paid to common units, including the general partner (Note 10)     (95.0) (123.0)
Distributions paid to Class B units (Note 8)     (13.0) (15.0)
Distributions paid to non-controlling interests     (15.0) (3.0)
Common unit issuance, net       40.0
Long-term debt issued, net of discount (Note 7)     20.0 130.0
Long-term debt repaid (Note 7)     (135.0) (225.0)
Debt issuance costs       (1.0)
Financing activities     (238.0) (197.0)
Increase in cash and cash equivalents     12.0 18.0
Cash and cash equivalents, beginning of period     33.0 33.0
Cash and cash equivalents, end of period 45.0 51.0 45.0 51.0
Iroquois        
Cash Generated from Operations        
Equity earnings from equity investments (Note 5) (7.0) (9.0) (20.0) (27.0)
Investing Activities        
Distribution received from return of investment (Note 5)     5.0 5.0
Northern Border        
Cash Generated from Operations        
Equity earnings from equity investments (Note 5) $ (14.0) $ (15.0) (35.0) $ (32.0)
Investing Activities        
Distribution received from return of investment (Note 5)     $ 50.0