Unearned Revenue by Segment (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Jun. 30, 2020
Contract With Customer Liability [Line Items]
Unearned revenue	$ 32,714	$ 39,180
Productivity and Business Processes
Contract With Customer Liability [Line Items]
Unearned revenue	16,169	18,643
Intelligent Cloud
Contract With Customer Liability [Line Items]
Unearned revenue	13,098	16,620
More Personal Computing
Contract With Customer Liability [Line Items]
Unearned revenue	$ 3,447	$ 3,917