Employee Benefit Plans (Tables)

9 Months Ended

Apr. 30, 2015

Employee Benefit Plans [Abstract]

Components Of Net Periodic Pension Costs

	Three Months Ended		Nine Months Ended
	April 30,		April 30,
	2015	2014	2015	2014
	(thousands of dollars)
Net periodic cost:
Service cost	$           4,827	$           4,719	$         15,105	$         14,104
Interest cost	4,842	4,885	14,526	14,602
Expected return on assets	(7,454)	(7,691)	(22,338)	(22,970)
Prior service cost and transition amortization	141	147	432	443
Settlement cost	-	-	3,906	-
Actuarial loss amortization	1,836	1,853	5,522	5,551
Net periodic benefit cost	$           4,192	$           3,913	$         17,153	$         11,730