XML 146 R121.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Long-Term Debt - Carrying Value of Long Term Debt Instruments (Detail) $ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 CAD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 CAD ($)
Disclosure of detailed information about borrowings [Line Items] |  |  |
Long-term debt | $ 4,769 |  | $ 4,784
4.70% Senior notes [Member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Issue date | Jun. 23, 2016 |  |
Maturity date | Jun. 23, 2046 |  |
Par value |  | $ 1,000 |
Long-term debt | $ 1,355 |  | 1,246
5.375% Senior notes [Member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Issue date | Mar. 04, 2016 |  |
Maturity date | Mar. 04, 2046 |  |
Par value |  | 750 |
Long-term debt | $ 1,010 |  | 928
3.527% Senior notes [Member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Issue date | Dec. 02, 2016 |  |
Maturity date | Dec. 02, 2026 |  |
Par value |  | 270 |
Long-term debt | $ 367 |  | 338
4.150% Senior notes [Member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Issue date | Mar. 04, 2016 |  |
Maturity date | Mar. 04, 2026 |  |
Par value |  | 1,000 |
Long-term debt | $ 1,356 |  | 1,246
4.90% Senior notes [Member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Issue date | Sep. 17, 2010 |  |
Maturity date | Sep. 17, 2020 |  |
Par value |  | 500 |
Long-term debt | $ 681 |  | 626
5.505% Medium term notes [member] |  |  |
Disclosure of detailed information about borrowings [Line Items] |  |  |
Issue date | Jun. 26, 2008 |  |
Maturity date | Jun. 26, 2018 |  |
Par value |  | $ 400 |
Long-term debt |  |  | $ 400

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