Retirement and Postretirement Benefit Plans - Change in Benefit Obligation and Plan Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Defined Benefit Pension Plans [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	$ 192,793	$ 184,786
Service cost	710	683	$ 1,115
Interest cost	6,186	7,249	7,065
Participant contributions	10	16
Plan amendments		580
Actuarial (gain) loss	(4,427)	14,137
Benefit payments	(11,299)	(11,431)
Currency exchange rate changes	(1,868)	3,227
Benefit obligation at end of year	182,105	192,793	184,786
Change in plan assets:
Fair value of plan assets at beginning of year	108,293	104,894
Actual return on plan assets	(2,646)	12,188
Employer contributions	6,547	5,612
Participant contributions	10	16
Benefit payments	(11,299)	(11,431)
Currency exchange rate changes	(1,686)	(2,986)
Fair value of plan assets at end of year	99,219	108,293	104,894
Funded status at end of year	(82,886)	(84,500)
Postretirement Benefit Plan [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	63,142	66,632
Service cost	335	368	431
Interest cost	2,028	2,545	2,397
Participant contributions	3,042	3,282
Retiree drug subsidy payments	467	590
Actuarial (gain) loss	(5,594)	(4,387)
Benefit payments	(5,448)	(5,888)
Benefit obligation at end of year	57,972	63,142	66,632
Change in plan assets:
Fair value of plan assets at beginning of year	45,600	48,757
Actual return on plan assets	(129)	2,313
Employer contributions	(3,042)	(3,282)
Participant contributions	3,042	3,282
Benefit payments	(5,448)	(5,888)
Benefit payments	(5,261)	(5,470)
Fair value of plan assets at end of year	40,210	45,600	$ 48,757
Funded status at end of year	$ (17,762)	$ (17,542)