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Consolidated Statements of Cash Flows - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Operating activities    
Net income $ 984 $ 710
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 899 911
Income from equity investments, net of dividends (76) (83)
Allowance for equity funds used during construction (45) (21)
Deferred income taxes, net 381 125
Net change in pension and post-retirement obligations (23) (17)
Regulated fuel adjustment mechanism (94) (46)
Net changes in fair value of derivative instruments (36) (39)
Net change in regulatory assets and liabilities (87) 44
Net change in capitalized transportation capacity 52 (55)
Impairment charges 25 34
Gain on sale, net of transaction costs (603) 0
Other operating activities, net 43 35
Changes in non-cash working capital (note 30) 217 (73)
Net cash provided by operating activities 1,637 1,525
Investing activities    
Additions to property, plant and equipment (2,623) (2,495)
Proceeds from dispositions (note 4) 1,401 875
Other investing activities (2) 3
Net cash used in investing activities (1,224) (1,617)
Financing activities    
Change in short-term debt, net 385 413
Proceeds from short-term debt with maturities greater than 90 days 399 0
Repayment of short-term debt with maturities greater than 90 days (688) 0
Proceeds from long-term debt, net of issuance costs 428 1,066
Retirement of long-term debt (513) (1,103)
Net repayments under committed credit facilities (203) (118)
Issuance of common stock, net of issuance costs 285 203
Dividends on common stock (409) (378)
Dividends on preferred stock (45) (45)
Other financing activities (11) (24)
Net cash (used in) provided by financing activities (372) 14
Effect of exchange rate changes on cash, cash equivalents, and restricted cash (61) (20)
Net increase (decrease) in cash, cash equivalents, restricted cash and assets held for sale (20) (98)
Cash, cash equivalents, restricted cash, and assets held for sale, beginning of year 274 372
Cash, cash equivalents, restricted cash and assets held for sale, end of the year $ 254 $ 274