0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated statement of income (U.S. GAAP, unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated statement of income (U.S. GAAP, unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated statement of comprehensive income (U.S. GAAP, unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated balance sheet (U.S. GAAP, unaudited) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated balance sheet (U.S. GAAP, unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Consolidated statement of shareholders' equity (U.S GAAP, unaudited) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Consolidated statement of cash flows (U.S. GAAP, unaudited) link:presentationLink link:calculationLink link:definitionLink 9952158 - Statement - Consolidated statement of cash flows (U.S. GAAP, unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Basis of financial statement preparation link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Business segments link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Investment and other income link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Employee retirement benefits link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Financing costs link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Long-term debt link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Other long-term obligations link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Financial and derivative instruments link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Common shares link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Other comprehensive income (loss) information link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Miscellaneous financial information link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Business segments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Investment and other income (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Employee retirement benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Financing costs (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Long-term debt (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Other long-term obligations (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Financial and derivative instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Common shares (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Other comprehensive income (loss) information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Miscellaneous financial information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Business segments (Detail) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Business segments - Table Narrative (Detail) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Investment and other income - Gains and Losses on Asset Sales (Detail) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Employee retirement benefits - Components of Net Periodic Benefit Cost (Detail) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Financing costs (Detail) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Long-term debt (Detail) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Other long-term obligations - Summary of Other Long-Term Obligations (Detail) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Other long-term obligations - Table Narrative (Detail) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Financial and derivative instruments - Narrative (Detail) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Financial and derivative instruments - Summary of net notional long/(short) position of derivative instruments (Detail) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Financial and derivative instruments - Summary of realized and unrealized gain or (loss) on derivative instruments (Detail) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Financial and derivative instruments - Summary of estimated fair value of financial instruments (Detail) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Common shares - Summary of Common Shares (Detail) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Common shares - Narrative (Detail) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Common shares - Common Share Activities (Detail) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Common shares - Calculation of basic and diluted earnings per common share and the dividend declared by the company on its outstanding common shares (Detail) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Other comprehensive income (loss) information - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Other comprehensive income (loss) information - Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss) (Detail) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Other comprehensive income (loss) information - Income Tax Expense (Credit) for Components of Other Comprehensive Income (Loss) (Detail) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Miscellaneous financial information - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Miscellaneous financial information - Summary of Reserves and Charges (Details) link:presentationLink link:calculationLink link:definitionLink