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SUPPLEMENTAL FINANCIAL INFORMATION Company (Condensed Consolidated Statement of Cash Flows) (Details) - CAD CAD in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |
Net Cash Provided by (Used in) Operating Activities, Continuing Operations | CAD 1,053 | CAD 674
Net Cash Provided by (Used in) Investing Activities [Abstract] |  |
Acquisition, net of cash acquired | (8,409) | 0
Additions to property, plant and equipment | (1,031) | (427)
Purchase of investments subject to significant influence, inclusive of acquisition costs (note 15) | (276) | (136)
Proceeds from Sale of Equity Method Investments | 665 | 282
Other investing activities | (54) | (22)
Net cash used in investing activities | (9,105) | (124)
Net Cash Provided by (Used in) Financing Activities [Abstract] |  |
Proceeds from (Repayments of) Short-term Debt | 118 | (262)
Proceeds from Issuance of Long-term Debt | 6,423 | 446
Proceeds from Convertible Debt | 1,413 | 681
Retirement of long-term debt | (273) | (90)
Net repayments under committed credit facilities | (315) | (201)
Proceeds from Issuance of Common Stock | 354 | 9
Dividends on common stock | (221) | (162)
Dividends on preferred stock | (28) | (30)
Dividends paid by subsidiaries to non-controlling interest | (5) | (14)
Proceeds from (Payments for) Other Financing Activities | (18) | (21)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations | 7,448 | 221
Cash and Cash Equivalents, Period Increase (Decrease) | (669) | 852
Consolidation, Eliminations [Member] |  |
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |
Net Cash Provided by (Used in) Operating Activities, Continuing Operations | 171 | (171)
Net Cash Provided by (Used in) Investing Activities [Abstract] |  |
Acquisition, net of cash acquired | 0 |
Additions to property, plant and equipment | 0 | 0
Purchase of investments subject to significant influence, inclusive of acquisition costs (note 15) | 0 | 0
Proceeds from Sale of Equity Method Investments | 0 | 0
Repayment of Notes Receivable from Related Parties | 9,179 | 2,482
Other investing activities | 0 | 1,331
Net cash used in investing activities | 9,179 | 3,813
Net Cash Provided by (Used in) Financing Activities [Abstract] |  |
Proceeds from (Repayments of) Short-term Debt | 14 | (4)
Proceeds from Issuance of Long-term Debt | (5,081) | (1,048)
Proceeds from Convertible Debt | 0 | 0
Retirement of long-term debt | 19 | 702
Proceeds from Long-term Lines of Credit | (6) | 0
Proceeds from Issuance of Common Stock | (4,202) | (2,390)
Issuance of preferred stock, net of issuance costs | (195) | (6)
Dividends on common stock | 254 | 162
Dividends on preferred stock | 49 | 40
Dividends paid by subsidiaries to non-controlling interest | (3) | (11)
Proceeds from (Payments for) Other Financing Activities | (185) | (1,091)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations | (9,336) | (3,646)
Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations | 0 | 0
Cash and Cash Equivalents, Period Increase (Decrease) | 14 | (4)
Beginning Balance | (14) | (10)
Ending Balance | 0 | (14)
Parent Company [Member] |  |
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |
Net Cash Provided by (Used in) Operating Activities, Continuing Operations | 265 | 291
Net Cash Provided by (Used in) Investing Activities [Abstract] |  |
Acquisition, net of cash acquired | 0 |
Additions to property, plant and equipment | (2) | (7)
Purchase of investments subject to significant influence, inclusive of acquisition costs (note 15) | 0 | (1)
Proceeds from Sale of Equity Method Investments | 665 | 0
Repayment of Notes Receivable from Related Parties | (2,348) | (2,453)
Other investing activities | 0 | (751)
Net cash used in investing activities | (1,685) | (3,212)
Net Cash Provided by (Used in) Financing Activities [Abstract] |  |
Proceeds from (Repayments of) Short-term Debt | (14) | 4
Proceeds from Issuance of Long-term Debt | 2,037 | 0
Proceeds from Convertible Debt | (44) | 2,138
Retirement of long-term debt | (250) | 0
Proceeds from Long-term Lines of Credit | (210) | (39)
Proceeds from Issuance of Common Stock | 354 | 9
Issuance of preferred stock, net of issuance costs | 0 | 0
Dividends on common stock | (221) | (162)
Dividends on preferred stock | (28) | (30)
Dividends paid by subsidiaries to non-controlling interest | 0 | 0
Proceeds from (Payments for) Other Financing Activities | 0 | 1,001
Net Cash Provided by (Used in) Financing Activities, Continuing Operations | 1,624 | 2,921
Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations | (4) | 0
Cash and Cash Equivalents, Period Increase (Decrease) | 200 | 0
Beginning Balance | 0 | 0
Ending Balance | 200 | 0
Subsidiary Issuer [Member] |  |
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |
Net Cash Provided by (Used in) Operating Activities, Continuing Operations | 29 | 0
Net Cash Provided by (Used in) Investing Activities [Abstract] |  |
Acquisition, net of cash acquired | 0 |
Additions to property, plant and equipment | 0 | 0
Purchase of investments subject to significant influence, inclusive of acquisition costs (note 15) | 0 | 0
Proceeds from Sale of Equity Method Investments | 0 | 0
Repayment of Notes Receivable from Related Parties | (4,416) | 0
Other investing activities | 0 | 0
Net cash used in investing activities | (4,416) | 0
Net Cash Provided by (Used in) Financing Activities [Abstract] |  |
Proceeds from (Repayments of) Short-term Debt | 0 | 0
Proceeds from Issuance of Long-term Debt | 4,187 | 0
Proceeds from Convertible Debt | 0 | 0
Retirement of long-term debt | 0 | 0
Proceeds from Long-term Lines of Credit | 0 | 0
Proceeds from Issuance of Common Stock | 242 | 0
Issuance of preferred stock, net of issuance costs | 0 | 0
Dividends on common stock | 0 | 0
Dividends on preferred stock | 0 | 0
Dividends paid by subsidiaries to non-controlling interest | 0 | 0
Proceeds from (Payments for) Other Financing Activities | 0 | 0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations | 4,429 | 0
Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations | (14) | 0
Cash and Cash Equivalents, Period Increase (Decrease) | 28 | 0
Beginning Balance | 0 | 0
Ending Balance | 28 | 0
Guarantor Subsidiaries [Member] |  |
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |
Net Cash Provided by (Used in) Operating Activities, Continuing Operations | 481 | 190
Net Cash Provided by (Used in) Investing Activities [Abstract] |  |
Acquisition, net of cash acquired | (8,409) |
Additions to property, plant and equipment | (633) | (66)
Purchase of investments subject to significant influence, inclusive of acquisition costs (note 15) | 0 | (3)
Proceeds from Sale of Equity Method Investments | 0 | 282
Repayment of Notes Receivable from Related Parties | (18) | 0
Other investing activities | (42) | (10)
Net cash used in investing activities | (9,102) | 203
Net Cash Provided by (Used in) Financing Activities [Abstract] |  |
Proceeds from (Repayments of) Short-term Debt | 122 | 0
Proceeds from Issuance of Long-term Debt | 4,516 | 29
Proceeds from Convertible Debt | 0 | 0
Retirement of long-term debt | (6) | (420)
Proceeds from Long-term Lines of Credit | 0 | (9)
Proceeds from Issuance of Common Stock | 3,865 | 0
Issuance of preferred stock, net of issuance costs | 195 | 0
Dividends on common stock | 0 | 0
Dividends on preferred stock | (31) | (15)
Dividends paid by subsidiaries to non-controlling interest | 0 | 0
Proceeds from (Payments for) Other Financing Activities | (18) | (11)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations | 8,643 | (426)
Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations | 7 | 14
Cash and Cash Equivalents, Period Increase (Decrease) | 29 | (19)
Beginning Balance | 19 | 38
Ending Balance | 48 | 19
Non-Guarantor Subsidiaries [Member] |  |
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |
Net Cash Provided by (Used in) Operating Activities, Continuing Operations | 107 | 364
Net Cash Provided by (Used in) Investing Activities [Abstract] |  |
Acquisition, net of cash acquired | 0 |
Additions to property, plant and equipment | (396) | (354)
Purchase of investments subject to significant influence, inclusive of acquisition costs (note 15) | (276) | (132)
Proceeds from Sale of Equity Method Investments | 0 | 0
Repayment of Notes Receivable from Related Parties | (2,397) | (29)
Other investing activities | (12) | (413)
Net cash used in investing activities | (3,081) | (928)
Net Cash Provided by (Used in) Financing Activities [Abstract] |  |
Proceeds from (Repayments of) Short-term Debt | (4) | (262)
Proceeds from Issuance of Long-term Debt | 764 | 1,465
Proceeds from Convertible Debt | 1,457 | (1,457)
Retirement of long-term debt | (36) | (372)
Proceeds from Long-term Lines of Credit | (99) | (153)
Proceeds from Issuance of Common Stock | 95 | 2,390
Issuance of preferred stock, net of issuance costs | 0 | 6
Dividends on common stock | (254) | (162)
Dividends on preferred stock | (18) | (25)
Dividends paid by subsidiaries to non-controlling interest | (2) | (3)
Proceeds from (Payments for) Other Financing Activities | 185 | (55)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations | 2,088 | 1,372
Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations | (54) | 67
Cash and Cash Equivalents, Period Increase (Decrease) | (940) | 875
Beginning Balance | 1,068 | 193
Ending Balance | CAD 128 | CAD 1,068

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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585 + Details
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