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Schedule I Condensed Balance Sheet (Parenthetical) (Details) - USD ($) $ / shares in Units, $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Class of Stock [Line Items] |  |
Treasury Stock, Shares (in shares) | 8,771,345 | 1,853,148
Designated Common Stock [Member] |  |
Class of Stock [Line Items] |  |
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 270,000,000 | 270,000,000
Common Stock, Shares, Issued | 80,979,833 | 80,843,472
Undesignated Common Stock [Member] |  |
Class of Stock [Line Items] |  |
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 13,800,000 | 30,000,000
Triton International Limited Holdings [Domain] |  |
Class of Stock [Line Items] |  |
Common Stock, Value, Issued | $ 810 | $ 809
Treasury Stock, Shares (in shares) | 1,853,148 | 0
Common Stock, Shares, Issued | 80,843,472 | 80,687,757
Triton International Limited Holdings [Domain] | Designated Common Stock [Member] |  |
Class of Stock [Line Items] |  |
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 270,000,000 | 294,000,000
Triton International Limited Holdings [Domain] | Undesignated Common Stock [Member] |  |
Class of Stock [Line Items] |  |
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 30,000,000 | 6,000,000

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