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Summary of Balance Sheet Information Related To Leases (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Operating Leases:
Operating lease right-of-use assets	$ 312,948
Operating lease liabilities	$ 312,628
Weighted average remaining lease term	17 years 4 months 24 days
Weighted average discount rate	3.25%

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- References

No definition available.

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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Amount of lessee's right to use underlying asset under operating lease.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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Weighted average discount rate for operating lease calculated at point in time.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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