Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2021	Sep. 10, 2019
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets		$ 104,271	$ 1,493,410	$ 495,000
Other current liabilities		$ 56,856	$ 75,748
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]		Other Accrued Liabilities, Current	Other Accrued Liabilities, Current
Operating lease liabilities		$ 63,526	$ 1,453,395
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]		Operating lease liabilities	Operating lease liabilities
Total		$ 120,382	$ 1,529,143
Operating Lease, Liability, Statement of Financial Position [Extensible List]		Accounts Payable, Current, Operating lease liabilities	Accounts Payable, Current, Operating lease liabilities
Property and equipment, gross		$ 6,965,949	$ 7,887,898
Accumulated depreciation		(4,783,616)	(4,630,111)
Property and equipment, net		2,182,333	3,257,787
Other current liabilities		$ 58,379	$ 34,772
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Long-term Debt and Capital Lease Obligations, Current	Long-term Debt and Capital Lease Obligations, Current
Other long-term liabilities		$ 103,795	$ 64,886
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Long Term Debt And Finance Lease Obligations Net Of Current Portion	Long Term Debt And Finance Lease Obligations Net Of Current Portion
Total		$ 162,174	$ 99,658
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]		Long-term Debt and Capital Lease Obligations, Current, Long Term Debt And Finance Lease Obligations Net Of Current Portion	Long-term Debt and Capital Lease Obligations, Current, Long Term Debt And Finance Lease Obligations Net Of Current Portion
Operating Lease, Weighted Average Remaining Lease Term		2 years 9 months 18 days	12 years 10 months 24 days
Finance Lease, Weighted Average Remaining Lease Term		3 years 1 month 6 days	2 years 7 months 6 days
Operating Lease, Weighted Average Discount Rate, Percent		4.20%	5.30%
Finance Lease, Weighted Average Discount Rate, Percent		10.40%	11.00%
Asset Impairment Charges		$ 356,418
Property and equipment [Member]
Lessee, Lease, Description [Line Items]
Property and equipment, gross		889,708	$ 568,889
Accumulated depreciation		(754,292)	(499,188)
Property and equipment, net		135,416	$ 69,701
NBIoT capitalized costs
Lessee, Lease, Description [Line Items]
Asset Impairment Charges	$ 253,000
NBIoT capitalized costs | Operating lease assets
Lessee, Lease, Description [Line Items]
Asset Impairment Charges		$ 26,556