Subsequent Events (Details) $ in Millions	Jul. 30, 2020 INR (₨)	Jul. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Subsequent Event [Line Items]
Non-marketable equity securities			$ 11,279	$ 11,353
Subsequent Event | Jio Platforms Ltd | Forecast
Subsequent Event [Line Items]
Non-marketable equity securities	₨ 337,370,000,000	$ 4,500
Subsequent Event | Jio Platforms Ltd | Forecast
Subsequent Event [Line Items]
Ownership percentage	7.70%	7.70%