General form of registration statement for all companies including face-amount certificate companies

Employee Benefit Plans - Additional Information (Detail)

v3.21.2
Employee Benefit Plans - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax $ 2.2 $ 2.8 $ 3.0
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years 5.7    
Defined Contribution Plan, Cost 3.7 3.1 1.7
Pension Plan [Member]      
Defined Benefit Plan, Service Cost 1.2 1.2 $ 1.1
Pension Plan [Member] | Defined Benefit Plan, Unfunded Plan [Member]      
Defined Benefit Plan, Benefit Obligation 12.3 11.9  
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan, Unfunded Plan [Member]      
Defined Benefit Plan, Benefit Obligation $ 0.7 $ 0.7