Debt - Debt Redemptions, Repurchases and Repayments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Apr. 27, 2020
Verizon 4.950% notes due 2047
Debt Instrument [Line Items]
Principal Redeemed/ Repurchased/ Repaid	$ 1,475
Amount Paid as % of Principal	100.00%
Stated interest rate on debt instrument	4.95%
Subsequent Event | Subsidiary Preferred Stock
Debt Instrument [Line Items]
Principal Redeemed/ Repurchased/ Repaid		$ 1,700