Amount drawn from credit facility during the period.

No definition available.

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Debt - Narrative (Details)	3 Months Ended
Debt - Narrative (Details)	Mar. 31, 2020 CAD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Commercial paper borrowings					$ 397,000,000
Commercial Paper
Debt Instrument [Line Items]
Maximum borrowing capacity, Commercial paper			$ 1,000,000,000.0
U.S $1.0 Billion Tranche
Debt Instrument [Line Items]
Current borrowing capacity			1,000,000,000.0
U.S. $300 Million Tranche
Debt Instrument [Line Items]
Current borrowing capacity			300,000,000	$ 300,000,000
Revolving credit facility, Drawn		$ 100,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity			$ 1,300,000,000
2.050% 10-year Notes
Debt Instrument [Line Items]
Debt instrument, Face amount				$ 500,000,000
Debt instrument, Interest rate	2.05%			2.05%
Debt instrument, Term	10 years	10 years
Debt instrument, Maturity date	Mar. 05, 2030	Mar. 05, 2030
Net proceeds from issuance of debt	$ 662,000,000	$ 495,000,000
3.050% 30-year Notes
Debt Instrument [Line Items]
Debt instrument, Face amount	$ 300,000,000
Debt instrument, Interest rate	3.05%			3.05%
Debt instrument, Term	30 years	30 years
Debt instrument, Maturity date	Mar. 09, 2050	Mar. 09, 2050
Net proceeds from issuance of debt	$ 296,000,000