Commitments and Contingencies - Expenses and Insurance Recoveries (Details) |
1 Months Ended | 3 Months Ended | 9 Months Ended | ||||
---|---|---|---|---|---|---|---|
Dec. 03, 2019
lawsuit
|
Nov. 30, 2018
lawsuit
|
Mar. 15, 2019
lawsuit
|
Sep. 30, 2021
USD ($)
lawsuit
|
Sep. 30, 2020
USD ($)
|
Sep. 30, 2021
USD ($)
lawsuit
|
Sep. 30, 2020
USD ($)
|
|
Data Security Incident | |||||||
Loss Contingencies [Line Items] | |||||||
Expense related to data security incident | $ | $ 4,000,000 | $ 35,000,000 | $ 16,000,000 | $ 17,000,000 | |||
Insurance recoveries related to data security incident | $ | 0 | 4,000,000 | 11,000,000 | 24,000,000 | |||
Insurance recoveries received | $ | $ 0 | $ 1,000,000 | $ 10,000,000 | $ 45,000,000 | |||
Class Action Lawsuits Related to Data Security Incident | |||||||
Loss Contingencies [Line Items] | |||||||
Number of new lawsuits filed | lawsuit | 100 | ||||||
Claims remaining | lawsuit | 1 | 1 | |||||
Shareholder Derivative Complaints Related to Data Security Incident | |||||||
Loss Contingencies [Line Items] | |||||||
Number of new lawsuits filed | lawsuit | 2 | 2 |