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Fair Value Quantitative and Qualitative Disclosures - Summary of Sensitivity Analysis Related to WACC (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Growth Rate At 2.00% [member] | WACC At 97.5%[member] |
Disclosure of fair value measurement of assets and liability [line items] |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets | $ 370.9
Growth Rate At 2.00% [member] | WACC At 100%[member] |
Disclosure of fair value measurement of assets and liability [line items] |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets | 366.2
Growth Rate At 2.00% [member] | WACC At 102.5%[member] |
Disclosure of fair value measurement of assets and liability [line items] |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets | 361.7
Growth Rate At 3.00% [member] | WACC At 97.5%[member] |
Disclosure of fair value measurement of assets and liability [line items] |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets | 391.8
Growth Rate At 3.00% [member] | WACC At 100%[member] |
Disclosure of fair value measurement of assets and liability [line items] |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets | 386.8
Growth Rate At 3.00% [member] | WACC At 102.5%[member] |
Disclosure of fair value measurement of assets and liability [line items] |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets | 381.9
Growth rate At 4.00% [member] | WACC At 97.5%[member] |
Disclosure of fair value measurement of assets and liability [line items] |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets | 416.5
Growth rate At 4.00% [member] | WACC At 100%[member] |
Disclosure of fair value measurement of assets and liability [line items] |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets | 411.1
Growth rate At 4.00% [member] | WACC At 102.5%[member] |
Disclosure of fair value measurement of assets and liability [line items] |
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets | $ 405.9

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- Definition Disclosure of fair value measurement of assets and liability. + References No definition available. + Details
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- Definition The amount of increase (decrease) in the fair value measurement of assets due to a reasonably possible increase in an unobservable input. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2020-01-01 -Paragraph 93 -Subparagraph h -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2020-en-r&anchor=para_93_h_ii&doctype=Standard -URIDate 2020-01-01 + Details
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