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Income Taxes - Narrative (Details) - Canadian Tax Authorities - Foreign $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Income Tax Examination [Line Items]
Amount of assessments received, including penalty and interest	$ 60
Other long-term assets, net
Income Tax Examination [Line Items]
Amount of disputed assessments paid	$ 40

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- Definition

Represents amount of assessment received related to an income tax examination which the reporting entity disputes.

+ References

No definition available.

+ Details

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- Definition

Represents the amount paid of the amount assessed related to an income tax examination which the reporting entity disputes.

+ References

No definition available.

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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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