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Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2017 | Jan. 31, 2016 | Jan. 31, 2017 | Jan. 31, 2016
Statement of Comprehensive Income [Abstract] |  |  |  |  |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent |  | $ 0 | $ (151) | $ 0 | $ (342)
Comprehensive income, net of tax: |  |  |  |  |
Net income |  | 66,066 | 59,004 | 233,346 | 111,614
Other comprehensive income: |  |  |  |  |
Unrealized gain on interest rate swaps, net (a) | [1] | 0 | 163 | 0 | 603
Reclassification adjustment of interest rate swaps, net (b) | [2] | 0 | (101) | 0 | (320)
Unrealized loss on available-for-sale securities, net (c) | [3] | 0 | (4,146) | 0 | (3,651)
Foreign currency translation adjustments |  | 8,420 | (24,247) | (10,355) | (30,910)
Total comprehensive income |  | 74,486 | 30,673 | 222,991 | 77,336
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax |  | 0 | 56 | 0 | 178
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax |  | $ 0 | $ 282 | $ 0 | $ 3
[1] | Net of tax effect of $(151) and $(342) for the three and six months ended January 31, 2016.
[2] | Net of tax effect of $56 and $178 for the three and six months ended January 31, 2016.
[3] | Net of tax effect of $282 and $3 for the three and six months ended January 31, 2016.

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