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Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Sep. 30, 2021 | Sep. 30, 2020
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Deferred tax assets: |  |
Deferred revenue | $ 25,282 | $ 25,252
Employee compensation and benefits | 76,020 | 75,689
Intangible assets, computer software and intellectual property | 75,200 | 18,705
Tax credits, net capital and operating loss carryforwards | 156,209 | 142,718
Lease liabilities | 50,780 | 71,204
Other | 46,372 | 52,611
Total deferred tax assets | 429,863 | 386,179
Valuation allowances | (65,550) | (69,455)
Total deferred tax assets, net | 364,313 | 316,724
Deferred tax liabilities: |  |
Anticipated withholdings on subsidiaries' earnings | (84,755) | (81,489)
Intangible assets, computer software and intellectual property | (109,526) | (114,772)
Lease assets | (47,822) | (69,215)
Other | (97,638) | (90,825)
Total deferred tax liabilities | (339,741) | (356,301)
Net deferred tax assets (liabilities) | $ 24,572 | $ (39,577)

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