Long-Term Leases and Commitments - Aggregate Future Minimum Noncancelable Leases, Net of Aggregate Future Minimum Noncancelable Sublease Rentals (Detail) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015
Gross rentals:
2016	$ 65,247
2017	68,840
2018	62,449
2019	50,933
2020	44,284
Later years	201,788
Total	493,541
Sublease rentals	(6,379)
Net rentals	$ 487,162

Long-Term Leases and Commitments - Aggregate Future Minimum Noncancelable Leases, Net of Aggregate Future Minimum Noncancelable Sublease Rentals (Detail) (USD $)
In Thousands, unless otherwise specified

Feb. 28, 2015

Gross rentals:

$ 65,247us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent

2017

68,840us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears

2018

62,449us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears

2019

50,933us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears

2020

44,284us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears

Later years

201,788us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter

Total

493,541us-gaap_OperatingLeasesFutureMinimumPaymentsDue

Sublease rentals

(6,379)us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals

Net rentals

$ 487,162am_OperatingLeasesFutureMinimumPaymentsDueNet

- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable lease-term in excess of one year, net of sub-lease rental revenue.

+ References

No definition available.

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- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

+ References

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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