Retirement and Postretirement Benefit Plans - Summary of Plan Assets Allocation (Detail)	12 Months Ended
Feb. 29, 2016	Feb. 28, 2015
U.S., Postretirement Defined Benefit [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, assets held in trust	26.00%	27.00%
Postretirement benefit plan, target allocation, minimum	15.00%
Postretirement benefit plan, target allocation, maximum	30.00%
U.S., Postretirement Defined Benefit [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, assets held in trust	70.00%	71.00%
Postretirement benefit plan, target allocation, minimum	65.00%
Postretirement benefit plan, target allocation, maximum	85.00%
U.S., Postretirement Defined Benefit [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, assets held in trust	4.00%	2.00%
Postretirement benefit plan, target allocation, minimum	0.00%
Postretirement benefit plan, target allocation, maximum	15.00%
U.S., Pension Plans [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, assets held in trust	48.00%	50.00%
U.S., Pension Plans [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, assets held in trust	51.00%	49.00%
U.S., Pension Plans [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, assets held in trust	1.00%	1.00%
International, Pension Plans [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, assets held in trust	36.00%	34.00%
International, Pension Plans [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, assets held in trust	64.00%	65.00%
International, Pension Plans [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, assets held in trust		1.00%

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Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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