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Operating Revenue (Details) (Operating revenues, Significant customers)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
|
HMM Korea
|
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| Operating Revenue | |||
| Percentage of operating revenue | 28.00% | 27.00% | 24.00% |
|
CMA CGM
|
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| Operating Revenue | |||
| Percentage of operating revenue | 27.00% | 24.00% | 24.00% |
|
Hanjin
|
|||
| Operating Revenue | |||
| Percentage of operating revenue | 18.00% | 17.00% | 17.00% |
|
YML
|
|||
| Operating Revenue | |||
| Percentage of operating revenue | 11.00% | 10.00% | 10.00% |