Commitments and Contingencies - Narrative (Detail) - USD ($) $ in Millions	1 Months Ended				3 Months Ended		9 Months Ended
	Apr. 30, 2023	Dec. 31, 2022	Mar. 31, 2021	Feb. 28, 2021	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2022
Loss Contingencies [Line Items]
Total firm commitments and future debt payments					$ 39,000		$ 39,000		$ 42,000
Right-of-use asset obtained in exchange for operating lease liability		$ 540
Legal settlement costs					850	$ 0	850	$ 0
Smartmatic
Loss Contingencies [Line Items]
Loss contingency, damages sought, value				$ 2,700
Dominion
Loss Contingencies [Line Items]
Loss contingency, damages sought, value			$ 1,600
Subsequent Event | Dominion
Loss Contingencies [Line Items]
Legal settlement costs	$ 800
U.K. Newspaper Matters Indemnity
Loss Contingencies [Line Items]
Liability related to indemnity					$ 120		$ 120		$ 65