Subsequent Events - Additional Information (Details) - Securities Class Actions - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2019	Jan. 17, 2020
Subsequent Event [Line Items]
Legal expense, net of amounts directly covered by insurance	$ 100.0
Pending Litigation \| Subsequent Event
Subsequent Event [Line Items]
Loss contingency, expected settlement amount		$ 187.5

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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