Supplemental Data - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental Data - Statements of Cash Flows
Cash paid for interest (including capitalized interest)		$ 781,874	$ 778,448	$ 900,125
Cash received for interest		5,455	5,945	40,795
Cash paid for income taxes		212,491	150,885	30,552
Capitalized interest (1)		821,455	924,644	980,299
Initial equity component of our 0% Convertible Notes due 2025, net of deferred taxes of $99,823			329,409
Master Transaction Agreement, net of deferred tax of $166,161				497,145
Employee benefits paid in Class A common stock		30,321	28,301	27,004
Vendor financing		26,627	74,895
FCC licenses reclassification (3)		915,449
Purchases of wireless equipment		449,093	$ 3,680
Deferred other tax expense (benefit)		166,161		$ 166,161
0% Convertible Notes due 2025.
Supplemental Data - Statements of Cash Flows
Interest rate (as a percent)			0.00%
Deferred tax related to equity component of convertible notes			$ 99,823
ASU 2020-06
Supplemental Data - Statements of Cash Flows
Convertible debt reclassified per ASU 2020-06 (1)	$ 1,051,000	1,051,344
Deferred taxes reclassified per ASU 2020-06 (1)		$ 245,778

Amount of deferred tax related to initial equity component of convertible notes.

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The amount of licenses reclassified.

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The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Interest received on loans and other debt instruments during the current period.

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