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v3.25.1

Debt Obligations - Schedule of Notes Payable (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Long Term Debt |  |
Gross amount of debt | $ 2,258,346,000 | $ 2,292,726,000
Total debt obligations | $ 2,231,593,000 | 2,264,552,000
Credit facility at a floating rate of interest of one-month term Secured Overnight Financing Rate (“SOFR”) plus 2.60% at March 31, 2025, secured by engines, airframes, and loan assets. The facility has a committed amount of $1.0 billion at March 31, 2025, which revolves until the maturity date of October 2029. |  |
Long Term Debt |  |
Variable rate (as a percent) | 2.60% |
Line of credit facility outstanding amount | $ 644,000,000 | 693,000,000
WEST VII Series A 2023 term notes payable at a fixed rate of interest of 8.00%, maturing in October 2048, secured by engines, airframes, and loan assets |  |
Long Term Debt |  |
Fixed rate (as a percent) | 8.00% |
Gross amount of debt | $ 344,279,000 | 356,355,000
WEST VI Series A 2021 term notes payable at a fixed rate of interest of 3.10%, maturing in May 2046, secured by engines, airframes, and loan assets |  |
Long Term Debt |  |
Fixed rate (as a percent) | 3.10% |
Gross amount of debt | $ 238,748,000 | 241,065,000
Less: unamortized debt issuance costs and note discounts | $ (26,753,000) | (28,174,000)
WEST VI Series B 2021 term notes payable at a fixed rate of interest of 5.44%, maturing in May 2046, secured by engines, airframes, and loan assets |  |
Long Term Debt |  |
Fixed rate (as a percent) | 5.44% |
Gross amount of debt | $ 33,164,000 | 33,486,000
Total debt obligations | $ 2,231,593,000 | 2,264,552,000
WEST VI Series C 2021 term notes payable at a fixed rate of interest of 7.39%, maturing in May 2046, secured by engines, airframes, and loan assets |  |
Long Term Debt |  |
Fixed rate (as a percent) | 7.39% |
Gross amount of debt | $ 9,355,000 | 9,926,000
WEST V Series A 2020 term notes payable at a fixed rate of interest of 3.23%, maturing in March 2045, secured by engines |  |
Long Term Debt |  |
Fixed rate (as a percent) | 3.23% |
Gross amount of debt | $ 223,338,000 | 226,572,000
WEST V Series B 2020 term notes payable at a fixed rate of interest of 4.21%, maturing in March 2045, secured by engines |  |
Long Term Debt |  |
Fixed rate (as a percent) | 4.21% |
Gross amount of debt | $ 31,112,000 | 31,563,000
WEST V Series C 2020 term notes payable at a fixed rate of interest of 6.66%, maturing in March 2045, secured by engines |  |
Long Term Debt |  |
Fixed rate (as a percent) | 6.66% |
Gross amount of debt | $ 7,513,000 | 8,142,000
WEST IV Series A 2018 term notes payable at a fixed rate of interest of 4.75%, maturing in September 2043, secured by engines |  |
Long Term Debt |  |
Fixed rate (as a percent) | 4.75% |
Gross amount of debt | $ 196,768,000 | 199,846,000
WEST IV Series B 2018 term notes payable at a fixed rate of interest of 5.44%, maturing in September 2043, secured by engines |  |
Long Term Debt |  |
Fixed rate (as a percent) | 5.44% |
Gross amount of debt | $ 26,916,000 | 27,338,000
WEST III Series A 2017 term notes payable at a fixed rate of interest of 4.69%, maturing in August 2042, secured by engines |  |
Long Term Debt |  |
Fixed rate (as a percent) | 4.69% |
Gross amount of debt | $ 157,825,000 | 161,308,000
WEST III Series B 2017 term notes payable at a fixed rate of interest of 6.36%, maturing in August 2042, secured by engines |  |
Long Term Debt |  |
Fixed rate (as a percent) | 6.36% |
Gross amount of debt | $ 21,191,000 | 21,659,000
Willis Warehouse Facility LLC (“WWFL”) credit facility at a floating rate of interest of one-month term SOFR, plus 2.25% at March 31, 2025 maturing in May 2029, secured by engines, airframes, and loan assets |  |
Long Term Debt |  |
Fixed rate (as a percent) | 2.25% |
Gross amount of debt | $ 218,667,000 | 221,882,000
Note payable at a fixed rate of interest of 5.00%, maturing in February 2033, secured by an engine |  |
Long Term Debt |  |
Fixed rate (as a percent) | 5.00% |
Gross amount of debt | $ 20,712,000 | 20,780,000
Note payable at a fixed rate of interest of 4.59%, maturing in November 2032, secured by an engine |  |
Long Term Debt |  |
Fixed rate (as a percent) | 4.59% |
Gross amount of debt | $ 21,962,000 | 22,094,000
Note payable at a fixed rate of interest of 4.23%, maturing in June 2032, secured by an engine |  |
Long Term Debt |  |
Fixed rate (as a percent) | 4.23% |
Gross amount of debt | $ 17,686,000 | 17,710,000
Note payable at a fixed rate of interest of 5.17%, maturing in March 2033, secured by an engine |  |
Long Term Debt |  |
Fixed rate (as a percent) | 5.17% |
Gross amount of debt | $ 24,000,000 | 0
Note payable at a fixed rate of interest of 5.91%, maturing in March 2034, secured by an engine |  |
Long Term Debt |  |
Fixed rate (as a percent) | 5.91% |
Gross amount of debt | $ 21,110,000 | $ 0
Revolving credit facility | Credit facility at a floating rate of interest of one-month term Secured Overnight Financing Rate (“SOFR”) plus 2.60% at March 31, 2025, secured by engines, airframes, and loan assets. The facility has a committed amount of $1.0 billion at March 31, 2025, which revolves until the maturity date of October 2029. |  |
Long Term Debt |  |
Line of credit facility, maximum borrowing capacity | $ 1,000,000,000.0 |

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