Strategic Initiatives - Branch Closings (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($) branch	Dec. 31, 2019 branch
Restructuring Cost and Reserve [Line Items]
Number of branches closing \| branch	60	20
Allocated restructuring costs from HTSU	$ 8
Occupancy Expense, Net [Member]
Restructuring Cost and Reserve [Line Items]
Lease impairment charges	52
Fixed asset impairment charges	$ 16

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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