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Schedule of Long Term Borrowings (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2020
6.5% Senior Notes Due 2021 [Member]
Disclosure of long term debt [Line Items]
Long term debt interest rate	6.50%
Long term debt maturity year	December 15, 2021
7.75% Senior Notes Due 2023 [Member]
Disclosure of long term debt [Line Items]
Long term debt interest rate	7.75%
Long term debt maturity year	December 15, 2023
5.25% Senior Notes Due 2024 [Member]
Disclosure of long term debt [Line Items]
Long term debt interest rate	5.25%
Long term debt maturity year	November 15, 2024
7.125% Senior Notes Due 2026 [Member]
Disclosure of long term debt [Line Items]
Long term debt interest rate	7.125%
Long term debt maturity year	January 15, 2026

X

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_7&doctype=Standard
-URIDate 2020-01-01

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X

- Definition

The maturity of borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_7&doctype=Standard
-URIDate 2020-01-01

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X

- Definition

Line items of long term debt.

+ References

No definition available.

+ Details

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- Details

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