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Debt Warehouse Facilities (Tables)
3 Months Ended
Mar. 31, 2021
Warehouse Facilities [Abstract]  
Schedule of Warehouse Facilities
Warehouse Facilities
March 31, 2021December 31, 2020
($ in millions)Outstanding BalanceMaximum CapacityOutstanding BalanceMaximum Capacity
Warehouse Facilities:
LIBOR plus 1.40%, expires September 20, 2021
$171.5 400.0 144.4 400.0 
LIBOR plus 1.40%, expires September 18, 2021(1)
516.6 1,200.0 768.9 1,600.0 
LIBOR plus 1.40%, expires August 27, 2021(2)
87.3 200.0 195.9 900.0 
Fannie Mae ASAP(3) program, LIBOR plus 1.15%
58.9 n/a128.8 n/a
LIBOR plus 1.50%
 300.0 261.6 300.0 
Gross warehouse facilities834.3 2,100.0 1,499.6 3,200.0 
Debt issuance costs(0.8)n/a(1.2)n/a
Total warehouse facilities$833.5 2,100.0 1,498.4 3,200.0 
(1) The temporary maximum capacity increase to $1,600.0 million expired on January 31, 2021; thereafter, the maximum capacity reverted to its original contractual amount.
(2) The temporary maximum capacity increase to $900.0 million expired on January 6, 2021; thereafter, the maximum capacity reverted to its original contractual amount.
(3) As Soon As Pooled ("ASAP") funding program.