Quarterly report pursuant to Section 13 or 15(d)

Provision for Income Taxes (Detail)

v3.19.2
Provision for Income Taxes (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Income Tax Disclosure [Abstract]          
Blended statutory tax rate, percent   24.50%      
Income tax benefit related to tax act       $ 4.4  
Effective tax rate, percent 22.30%   9.50% 23.30% 13.10%