Stock-Based Compensation - Annual Performance-Based Awards Granted (Detail)	9 Months Ended
	Mar. 31, 2019 shares
FY2019 PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PRSUs granted	101,976
FY2018 PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PRSUs granted	185,056
Additional PRSUs earned pursuant to condition	20,116
FY2017 PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PRSUs granted	193,420
Additional PRSUs earned pursuant to condition	73,065