| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Transfers, Net (Deprecated 2019-01-31) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Transfers, Net, Total (Deprecated 2019-01-31) | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Amount of transfers of financial instrument classified in shareholders' equity into (out of) level 3 of the fair value hierarchy. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |