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Indebtedness - Summary of Debt Activity (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Aug. 12, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Debt |  |  |  |
Balance at the beginning of the period |  | $ 246,000,000.0 |  |
Borrowings |  | 245,100,000 |  |
Repayments |  | (244,600,000) |  |
Other |  | 300,000 |  |
Balance at the end of the period |  | 246,800,000 | $ 246,000,000.0 |
Short-term debt |  | 1,800,000 | 2,200,000 |
Current maturities of long-term debt |  | 2,000,000.0 | 13,000,000.0 |
Long-term debt |  | 243,000,000.0 | 230,800,000 |
Repayments under Senior Credit Facilities |  | 243,700,000 | 346,000,000.0 | $ 207,800,000
Finance lease, liability |  | 700,000 | 1,100,000 |
Trade receivables financing arrangement |  |  |  |
Debt |  |  |  |
Balance at the beginning of the period |  | 0 |  |
Borrowings |  | 0 |  |
Repayments |  | 0 |  |
Other |  | 0 |  |
Balance at the end of the period |  | 0 | 0 |
Maximum borrowing capacity under financing arrangement |  | 50,000,000.0 |  |
Available borrowing capacity |  | 45,700,000 |  |
Other indebtedness |  |  |  |
Debt |  |  |  |
Balance at the beginning of the period |  | 3,300,000 |  |
Borrowings |  | 100,000 |  |
Repayments |  | (900,000) |  |
Other |  | 0 |  |
Balance at the end of the period |  | 2,500,000 | 3,300,000 |
Purchase card programs |  | 1,800,000 | 2,200,000 |
Finance lease, liability |  | 700,000 | 1,100,000 |
Revolving loans | Current Revolving SPX Facilities |  |  |  |
Debt |  |  |  |
Balance at the beginning of the period |  | 0 |  |
Borrowings |  | 0 |  |
Repayments |  | 0 |  |
Other |  | 0 |  |
Balance at the end of the period |  | 0 | 0 |
Term loans | Current SPX Term Loan Facilities |  |  |  |
Debt |  |  |  |
Balance at the beginning of the period |  | 242,700,000 |  |
Borrowings |  | 245,000,000.0 |  |
Repayments |  | (243,700,000) |  |
Other |  | 300,000 |  |
Balance at the end of the period |  | 244,300,000 | 242,700,000 |
Maximum borrowing capacity under financing arrangement | $ 245,000,000.0 |  |  |
Unamortized debt issuance costs |  | $ 700,000 | $ 1,000,000.0 |
Term loans | Previous SPX Term Loan Facilities |  |  |  |
Debt |  |  |  |
Repayments under Senior Credit Facilities | $ 237,400,000 |  |  |
Term loans | 2022 and 2023 | Current SPX Term Loan Facilities |  |  |  |
Debt |  |  |  |
Initial principal amount of the term loan to be repaid annually in quarterly installments (as a percent) |  | 0.625% |  |
Term loans | First three quarters of 2024 | Current SPX Term Loan Facilities |  |  |  |
Debt |  |  |  |
Initial principal amount of the term loan to be repaid annually in quarterly installments (as a percent) |  | 1.25% |  |

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