| Name | DepreciationOfHighwayNoncurrentAssetsOpeCFHWY |
|---|---|
| Namespace | http://disclosure.edinet-fsa.go.jp/taxonomy/jppfs/2020-11-01/jppfs_cor |
| Prefix | jppfs_cor |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| 高速道路事業固定資産減価償却費 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 高速道路事業固定資産減価償却費、営業活動によるキャッシュ・フロー、高速道路事業 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Depreciation of highway non-current assets | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Depreciation of highway non-current assets-OpeCF-HWY | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |