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Debt and Other Obligations (Textuals) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Principal amount |  | $ 750,000 |  | $ 1,250,000 | $ 1,950,000 |  |  |  |  |  |
Max duration of CP |  | 397 |  |  |  |  |  |  |  |  |
Maximum Upward Adjustment - Spread |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.05% |  |  |  |  |  |  |  |  |
Maximum Downward Adjustment - Spread |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.00% |  |  |  |  |  |  |  |  |
Maximum Upward Adjustment - Commitment Fee |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.01% |  |  |  |  |  |  |  |  |
Maximum Downward Adjustment - Commitment Fee [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.01% |  |  |  |  |  |  |  |  |
2018 Tower Revenue Notes 4.241% due 2048 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 750,000 |  |  |  |  |  |  |  |  |
2015 Tower Revenue Notes 3.663% due 2045 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 700,000 |  |  |  |  |  |  |  |  |
Secured Debt [Member] | July 2018 Tower Revenue Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 1,000,000 |  |  |  |  |
Secured Debt [Member] | 2018 Tower Revenue Notes 3.720% due 2043 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 250,000 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 3.72% |  |  |  |  |
Secured Debt [Member] | 2018 Tower Revenue Notes 4.241% due 2048 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 750,000 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.20% | [1] |  |  | 4.241% |  |  |  |  |
Secured Debt [Member] | 2018 Tower Revenue Notes Risk Retention Tranche [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 53,000 |  |  |  |  |
Secured Debt [Member] | May 2015 Tower Revenue Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  | $ 1,000,000
Secured Debt [Member] | 2015 Tower Revenue Notes 3.222% due 2042 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  | $ 300,000
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 3.222%
Secured Debt [Member] | 2015 Tower Revenue Notes 3.663% due 2045 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  | $ 700,000
Debt Instrument, Interest Rate, Stated Percentage |  | 3.70% | [1] |  |  |  |  |  |  |  | 3.663%
Secured Debt [Member] | Fixed Rate Securitized Debt August 2010 Tower Revenue Notes 6 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  | $ 250,000
Bank Debt [Member] | 2016 Term Loan A [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | $ 2,000,000 |
Debt Instrument, Interest Rate, Stated Percentage | [1],[2] | 6.50% |  |  |  |  |  |  |  |  |
Bank Debt [Member] | 2016 Term Loan A [Member] | Extended Maturity |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  | $ 500,000 |  |
Bank Debt [Member] | Senior Unsecured 364-Day Revolving Credit Facility [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  | 1,000,000 |
Bank Debt [Member] | 2016 Revolver [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  | 500,000 |  |  |  |  |
Bonds [Member] | May 2016 Senior Unsecured Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | 1,000,000 |
Bonds [Member] | 4.875% Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 4.875% |  |  |  |
Bonds [Member] | 4.000% Senior Unsecured Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  | $ 500,000 |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.00% | [1] |  |  |  |  |  | 4.00% |  |
Bonds [Member] | 2016 Senior Unsecured Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | 1,500,000 |
Bonds [Member] | 3.400% Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | $ 250,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 3.40% |
Bonds [Member] | 3.700% Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | $ 750,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 3.70% |
Bonds [Member] | 2.250% Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 2.25% |  |  |  |
Bonds [Member] | 4.450% Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | $ 900,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 4.45% |
Bonds [Member] | 4.750% Senior Unsecured Notes [Member] [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  | $ 350,000 |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.80% | [1] |  |  |  |  |  | 4.75% |  |
Bonds [Member] | August 2017 Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  | $ 1,750,000 |  |
Bonds [Member] | August 2017 Senior Unsecured 3.200% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  | $ 750,000 |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.20% | [1] |  |  |  |  |  | 3.20% |  |
Bonds [Member] | August 2017 Senior Unsecured 3.650% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  | $ 1,000,000 |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.70% | [1] |  |  |  |  |  | 3.65% |  |
Bonds [Member] | 3.150% Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 750,000 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.15% |  |  |  | 3.15% |  |  |  |  |
Bonds [Member] | 3.800% Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 1,000,000 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.80% | [1] |  |  | 3.80% |  |  |  |  |
Bonds [Member] | August 2019 Senior Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 900,000 |  |  |
Bonds [Member] | August 2019 Senior Unsecured 3.100% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 550,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.10% | [1] |  |  |  |  | 3.10% |  |  |
Bonds [Member] | August 2019 Senior Unsecured 4.000% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 350,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.00% | [1] |  |  |  |  | 4.00% |  |  |
Bonds [Member] | February 2019 Senior Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 1,000,000 |  |  |
Bonds [Member] | February 2019 Senior Unsecured 4.300% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 600,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.30% | [1] |  |  |  |  | 4.30% |  |  |
Bonds [Member] | February 2019 Senior Unsecured 5.200% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 400,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.20% | [1] |  |  |  |  | 5.20% |  |  |
Bonds [Member] | June 2020 Senior Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 2,500,000 |  |  |  |
Bonds [Member] | June 2020 Senior Unsecured 1.350% Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 500,000 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.40% | [1] |  |  |  | 1.35% |  |  |  |
Bonds [Member] | June 2020 Senior Unsecured 2.250% Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 1,100,000 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.30% | [1] |  |  |  | 2.25% |  |  |  |
Bonds [Member] | June 2020 Senior Unsecured 3.250% Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 900,000 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.30% | [1] |  |  |  | 3.25% |  |  |  |
Bonds [Member] | Senior Unsecured 2016 Notes 3.40% [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 3.40% |  |  |  |
Bonds [Member] | April 2020 Senior Unsecured 4.150% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 500,000 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.20% | [1] |  |  |  | 4.15% |  |  |  |
Bonds [Member] | April 2020 Senior Notes [Domain] [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 1,250,000 |  |  |  |
Bonds [Member] | 5.250% Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.25% |  |  |  |  |  |  |  |  |
Bonds [Member] | December 2023 Senior Unsecured 5.600% Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 750,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [1] | 5.60% |  |  |  |  |  |  |  |  |
Bonds [Member] | December 2023 Senior Unsecured 5.800% Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 750,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [1] | 5.80% |  |  |  |  |  |  |  |  |
Bonds [Member] | April 2023 4.800% Senior Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 600,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [1] | 4.80% |  |  |  |  |  |  |  |  |
Bonds [Member] | April 2023 Senior Unsecured 5.100% Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 750,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [1] | 5.10% |  |  |  |  |  |  |  |  |
Bonds [Member] | January 2023 Senior Unsecured 5.000% Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 1,000,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [1] | 5.00% |  |  |  |  |  |  |  |  |
Bonds [Member] | March 2022 Senior Unsecured 2.900% Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  | $ 750,000 |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 2.90% |  |  |  |  |  |  |
Bonds [Member] | June 2021 Senior Unsecured 2.500% Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 750,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 2.50% |  |  |  |  |  |
Bonds [Member] | February 2021 Senior Unsecured 1.050% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 1,000,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 1.05% |  |  |  |  |  |
Bonds [Member] | February 2021 Senior Unsecured 2.100% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 1,000,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 2.10% |  |  |  |  |  |
Bonds [Member] | February 2021 Senior Unsecured 2.900% Notes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 1,250,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.90% |  |  |  |  |  |  |  |  |
Bonds [Member] | April 2020 Senior Unsecured 3.300% Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 750,000 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.30% | [1] |  |  |  | 3.30% |  |  |  |
Bonds [Member] | February 2021 Senior Notes [Domain] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 3,250,000 |  |  |  |  |  |
Collateral Pledged [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, PPE Collaterized Amount |  | $ 731,000 |  |  |  |  |  |  |  |  |
February 2016 Senior Note Upsizing [Member] | Bonds [Member] | 3.400% Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | $ 600,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 3.40% |
Commercial Paper [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 2,000,000 |  |  |  | $ 1,000,000 |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 7,000,000 |  | $ 4,250,000 |  | $ 5,000,000 | $ 3,500,000 | $ 2,500,000 |
Debt Instrument, Interest Rate, Stated Percentage | [1],[2] | 6.50% |  |  |  |  |  |  |  |  |
[1] | Represents the weighted-average stated interest rate, as applicable.
[2] | Both the 2016 Revolver and senior unsecured term loan A facility ("2016 Term Loan A" and, collectively, "2016 Credit Facility") bear interest, at the Company's option, at either (1) Term SOFR plus (i) a credit spread adjustment of 0.10% per annum and (ii) a credit spread ranging from 0.875% to 1.750% per annum or (2) an alternate base rate plus a credit spread ranging from 0.000% to 0.750% per annum, in each case, with the applicable credit spread based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.080% to 0.300%, based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver. See further discussion below regarding potential adjustments to such percentages.

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