Senior Notes and Other Long-Term Debt - Bridge Facility (Detail) - Bridge Facility [Member] - USD ($) $ in Millions		12 Months Ended
	May 30, 2023	Mar. 31, 2024
Debt Instrument [Line Items]
Credit facility description		In connection with the closing of the Inmarsat Acquisition, on May 30, 2023, the Company entered into a $733.4 million unsecured Bridge Facility, which was fully drawn at closing and had an initial maturity date of May 30, 2024 (automatically converting to a term loan if not repaid by such date). On September 28, 2023, the Company replaced the Bridge Facility with the 2031 Notes, in the same principal amount and at the same interest rate.
Credit Facility maximum borrowing capacity	$ 733.4
Maturity date	May 30, 2024