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Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure of cash flow statement [Abstract]

Disclosure of non-cash operating working capital


Year ended Dec. 31			2019			2018			2017
(Use) source:
Accounts receivable			261			58			(228)
Prepaid expenses			—			19			(75)
Income taxes receivable			(6)			—			8
Inventory			(13)			(21)			(7)
Accounts payable, accrued liabilities and provisions			(130)			(97)			186
Income taxes payable			9			(3)			2
Change in non-cash operating working capital			121			(44)			(114)

Cash flows from (used in) operating activities [Text Block]


			Balance Dec. 31, 2018			Net cash flows			New leases			Tax shield on tax equity financing			Dividends declared			Foreign exchange impact			Other			Balance Dec. 31, 2019
Long-term debt and lease obligations			3,267			(70)			133			(35)			—			(42)			(41)			3,212
Exchangeable securities			—			350			—			—			—			—			(24)			326
Dividends payable (common and preferred)			58			(85)			—			—			64			—			—			37
Total liabilities from financing activities			3,325			195			133			(35)			64			(42)			(65)			3,575


			Balance Dec. 31, 2017			Net cash flows			New leases			Dividends declared			Foreign exchange impact			Other			Balance Dec. 31, 2018
Long-term debt and finance lease obligations			3,707			(540)			10			—			95			(5)			3,267
Dividends payable (common and preferred)			34			(86)			—			107			—			3			58
Total liabilities from financing activities			3,741			(626)			10			107			95			(2)			3,325