Acquisitions - Summary of Preliminary Allocation of Purchase Price to Fair Values of Identifiable Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) - Modernize, Inc. [Member] $ in Millions	9 Months Ended
	Mar. 31, 2021 USD ($)
Business Acquisition [Line Items]
Net deferred tax liabilities	$ 7.9
Internal Revenue Service (IRS)
Business Acquisition [Line Items]
Incremental tax expenses	2.1
Increase in total consideration	$ 2.1