Description of the Business, Basis of Presentation and Accounting Policy Updates - Concentration of Credit Risk (Details) - Operating and Capital Leases Billing - Credit Concentration Risk	9 Months Ended
Sep. 30, 2020
CMA CGM S.A
Concentration Risk [Line Items]
Concentration Risk, Percentage	21.00%
Mediterranean Shipping Company
Concentration Risk [Line Items]
Concentration Risk, Percentage	15.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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