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Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
Carry forward tax losses | $ 76.2 | $ 90.1
Employee stock based compensation | 25.9 | 19.3
Deferred revenues | 26.3 | 22.2
Other | 35.3 | 53.2
Deferred tax assets before valuation allowance | 163.7 | 184.8
Valuation allowance - mainly in respect to carryforward losses | (57.7) | (55.8)
Deferred tax asset | 106.0 | 129.0
Intangible assets | (16.9) | (11.3)
Undistributed earnings of subsidiary | (9.9) | (9.9)
Other | (4.2) | (4.7)
Deferred tax liability | (31.0) | (25.9)
Deferred tax asset, net | $ 75.0 | $ 103.1

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