Commitments and Contingencies - Narrative Part 2 (Details) - USD ($)			9 Months Ended	156 Months Ended	165 Months Ended
	Sep. 27, 2019	Sep. 23, 2016	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2021
Dish Network
Loss contingencies
Total investment			$ 22,000,000,000	$ 22,000,000,000
Payment to acquire certain wireless licenses and related assets					$ 12,000,000,000
Turner Network Sales Litigation [Member]
Loss contingencies
Incremental loss contingency			206,000,000		$ 206,000,000
Turner Network Sales Litigation [Member] | Turner Network Sales
Loss contingencies
License fee payments	$ 20,000,000
AWS 3 Auction | Northstar Wireless or Northstar Spectrum | Vermont National Telephone Company
Loss contingencies
Bidding Credit		$ 3,300,000,000
Loss Contingency Recovery Amount		10,000,000,000
AWS 3 Auction | Maximum | Northstar Wireless or Northstar Spectrum | Vermont National Telephone Company
Loss contingencies
Claim amount		11,000
Aggregate amount to the federal and state plaintiffs		11,000
AWS 3 Auction | Minimum | Northstar Wireless or Northstar Spectrum | Vermont National Telephone Company
Loss contingencies
Claim amount		5,500
Aggregate amount to the federal and state plaintiffs		$ 5,500
Prepaid Business Sale [Member]
Loss contingencies
Payment to acquire certain wireless licenses and related assets			$ 3,590,000,000