| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2015-07-01 - 2016-06-30 |
|---|
Income Tax Disclosure [Abstract] | |
Schedule of income loss before income tax expense |
|
|
|
Year ended June 30,
|
|
|
|
|
2016
|
|
|
2015
|
|
|
2014
|
|
|
Domestic
|
|
$
|
207,641
|
|
|
$
|
187,332
|
|
|
$
|
204,879
|
|
|
Foreign
|
|
|
15,971
|
|
|
|
14,190
|
|
|
|
13,763
|
|
|
Income before income taxes
|
|
$
|
223,612
|
|
|
$
|
201,522
|
|
|
$
|
218,642
|
|
|
Schedule of components of income tax expense |
|
|
|
Year ended June 30,
|
|
|
|
|
2016
|
|
|
2015
|
|
|
2014
|
|
|
Current:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Federal
|
|
$
|
54,507
|
|
|
$
|
37,159
|
|
|
$
|
53,055
|
|
|
State and local
|
|
|
9,401
|
|
|
|
8,080
|
|
|
|
11,456
|
|
|
Foreign
|
|
|
3,337
|
|
|
|
3,066
|
|
|
|
3,256
|
|
|
Total current
|
|
|
67,245
|
|
|
|
48,305
|
|
|
|
67,767
|
|
|
Deferred:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Federal
|
|
|
11,978
|
|
|
|
23,261
|
|
|
|
12,580
|
|
|
State and local
|
|
|
2,028
|
|
|
|
3,964
|
|
|
|
2,680
|
|
|
Foreign
|
|
|
(438
|
)
|
|
|
(203
|
)
|
|
|
299
|
|
|
Total deferred
|
|
|
13,568
|
|
|
|
27,022
|
|
|
|
15,559
|
|
|
Total income tax expense
|
|
$
|
80,813
|
|
|
$
|
75,327
|
|
|
$
|
83,326
|
|
|
Schedule of effective income tax rate reconciliation |
|
|
|
Year ended June 30,
|
|
|
|
|
2016
|
|
|
2015
|
|
|
2014
|
|
|
Expected tax expense computed at federal rate
|
|
$
|
78,264
|
|
|
$
|
70,533
|
|
|
$
|
76,525
|
|
|
State and local taxes, net of federal benefit
|
|
|
7,429
|
|
|
|
7,828
|
|
|
|
9,188
|
|
|
Nondeductible items
|
|
|
2,936
|
|
|
|
2,166
|
|
|
|
1,150
|
|
|
Effect of foreign tax rates
|
|
|
(2,308
|
)
|
|
|
(2,135
|
)
|
|
|
(1,885
|
)
|
|
Other
|
|
|
(5,508
|
)
|
|
|
(3,065
|
)
|
|
|
(1,652
|
)
|
|
Total income tax expense
|
|
$
|
80,813
|
|
|
$
|
75,327
|
|
|
$
|
83,326
|
|
|
Schedule of deferred tax assets and liabilities |
|
|
|
June 30,
|
|
|
|
|
2016
|
|
|
2015
|
|
|
Deferred tax assets:
|
|
|
|
|
|
|
|
|
|
Deferred compensation and post-retirement obligations
|
|
$
|
35,724
|
|
|
$
|
34,963
|
|
|
Reserves and accruals
|
|
|
39,903
|
|
|
|
25,498
|
|
|
Stock-based compensation
|
|
|
9,833
|
|
|
|
7,242
|
|
|
Interest rate swap
|
|
|
8,505
|
|
|
|
4,616
|
|
|
Deferred rent
|
|
|
5,765
|
|
|
|
4,886
|
|
|
Other
|
|
|
8,353
|
|
|
|
11,760
|
|
|
Total deferred tax assets
|
|
|
108,083
|
|
|
|
88,965
|
|
|
Deferred tax liabilities:
|
|
|
|
|
|
|
|
|
|
Goodwill and other intangible assets
|
|
|
(320,811
|
)
|
|
|
(258,498
|
)
|
|
Unbilled revenue
|
|
|
(18,740
|
)
|
|
|
(15,652
|
)
|
|
Prepaid expenses
|
|
|
(8,308
|
)
|
|
|
(5,452
|
)
|
|
Other
|
|
|
(8,682
|
)
|
|
|
(9,600
|
)
|
|
Total deferred tax liabilities
|
|
|
(356,541
|
)
|
|
|
(289,202
|
)
|
|
Net deferred tax liability
|
|
$
|
(248,458
|
)
|
|
$
|
(200,237
|
)
|
|
Schedule of unrecognized tax benefits |
|
|
|
Year ended June 30,
|
|
|
|
|
2016
|
|
|
2015
|
|
|
2014
|
|
|
Beginning of year
|
|
$
|
6,220
|
|
|
$
|
9,636
|
|
|
$
|
8,184
|
|
|
Additions based on current year tax positions
|
|
|
89
|
|
|
|
1,468
|
|
|
|
2,023
|
|
|
Reductions based on changes to prior year tax positions
|
|
|
—
|
|
|
|
(3,522
|
)
|
|
|
—
|
|
|
Lapse of statute of limitations
|
|
|
(128
|
)
|
|
|
(1,344
|
)
|
|
|
(426
|
)
|
|
Settlement with taxing authorities
|
|
|
(5,783
|
)
|
|
|
(18
|
)
|
|
|
(145
|
)
|
|
End of year
|
|
$
|
398
|
|
|
$
|
6,220
|
|
|
$
|
9,636
|
|
|