Commitments and Contingencies - Expenses and Insurance Recoveries (Details)	Nov. 30, 2018 lawsuit
Class Action Lawsuits Related to Data Security Incident
Loss Contingencies [Line Items]
Number of new lawsuits filed	100

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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