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v3.23.3

INDEBTEDNESS - Senior Credit Facilities (Details) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Apr. 21, 2023 USD ($) drawing | Jun. 30, 2023 USD ($) | Aug. 31, 2022 USD ($) | Sep. 30, 2023 USD ($) | Oct. 01, 2022 USD ($) | Sep. 30, 2023 USD ($) | Oct. 01, 2022 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Number of drawings | drawing | 3 |  |  |  |  |  |
Borrowings |  |  |  |  |  | $ 932,500,000 |
Loss on amendment/refinancing of senior credit agreement |  |  |  | $ 0 | $ 1,100,000 | $ 0 | $ 1,100,000
Senior Credit Facilities |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  | $ 1,100,000 |  |  |  |
Loss on amendment/refinancing of senior credit agreement |  |  | 700,000 |  |  |  |
Unamortized debt issuance costs |  |  | 400,000 |  |  |  |
Fees paid |  |  | 1,500,000 |  |  |  |
Incremental Term loans | Term loan | Fed Funds Effective Rate Overnight Index Swap Rate |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) | 0.50% |  |  |  |  |  |
Incremental Term loans | Term loan | Term SOFR Loans |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) | 1.00% |  |  |  |  |  |
Basis spread on variable rate | 0.10% |  |  |  |  |  |
Incremental Term loans | Term loan | Secured Overnight Financing Rate (SOFR), Period One |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Duration of interest period | 1 month |  |  |  |  |  |
Incremental Term loans | Term loan | Secured Overnight Financing Rate (SOFR), Period Two |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Duration of interest period | 3 months |  |  |  |  |  |
Incremental Term loans | Term loan | Secured Overnight Financing Rate (SOFR), Period Three |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Duration of interest period | 6 months |  |  |  |  |  |
Secured Debt | Senior Credit Facilities |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Face amount of debt | $ 300,000,000.0 |  |  |  |  |  |
Borrowings |  | $ 300,000,000.0 |  |  |  |  |
Line of Credit |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Weighted-average interest rate of senior credit facilities (as a percent) |  |  |  | 7.00% |  | 7.00% |
Line of Credit | Incremental Term loans |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Percentage of capital stock of domestic subsidiaries | 100.00% |  |  |  |  |  |
Percentage of capital stock of material first tier foreign subsidiaries | 65.00% |  |  |  |  |  |
Percentage of non-voting capital stock | 100.00% |  |  |  |  |  |
Revolving loans | Senior Credit Facilities |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Fees paid |  |  | 1,200,000 |  |  |  |
Revolving loans | Current Revolving SPX Facilities |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Borrowings |  |  |  |  |  | $ 551,300,000 |
Amount of available borrowing capacity |  |  |  | $ 392,900,000 |  | 392,900,000 |
Letters of credit issued, amount outstanding |  |  |  | 10,800,000 |  | 10,800,000 |
Revolving loans | Current Revolving SPX Facilities | UNITED STATES |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Borrowings |  |  |  |  |  | 96,300,000 |
Foreign credit instrument facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Amount of available borrowing capacity |  |  |  | 9,700,000 |  | 9,700,000 |
Letters of credit issued, amount outstanding |  |  |  | $ 15,300,000 |  | $ 15,300,000 |
Term loan | Senior Credit Facilities |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Fees paid |  |  | $ 300,000 |  |  |  |

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