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Leases and Other Finance Obligations - Summary of Weighted Average Lease Terms and Discount Rates (Detail)	Sep. 30, 2021	Dec. 31, 2020
Weighted average remaining lease term (years)
Operating leases	6 years 4 months 24 days	6 years 3 months 18 days
Finance leases	3 years 7 months 6 days	2 years 1 month 6 days
Weighted average discount rate
Operating leases	5.40%	6.30%
Finance leases	4.40%	5.90%

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- Definition

Lease weighted average discount rate.

+ References

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Lease weighted average remaining lease term.

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- Definition

Weighted average discount rate for finance lease calculated at point in time.

+ References

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-Publisher FASB
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Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
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-URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971

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