Leases - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($) property corporateOffice branch	Dec. 31, 2018 USD ($)
Sale Leaseback Transaction [Line Items]
Lease costs			$ 29,000
Sublease income			3,500
Operating leases, ROU assets	$ 251,293	$ 284,255
Operating leases, liabilities	275,248	308,060
Operating lease cost	36,094	34,175
Sales-type and direct financing leases, lease receivable	643,549	478,800
Sales-type and direct financing lease, unguaranteed residual asset	641,300	477,100
Sales-type and direct financing leases, lease receivables	2,200	1,700
Lease income	$ 25,200	$ 19,400	$ 14,700
Sale leaseback transaction, March 2019
Sale Leaseback Transaction [Line Items]
Sale leaseback transaction, number of properties | property		26
Sale leaseback transaction, number of branches | branch		25
Sale leaseback transaction, number of corporate offices | corporateOffice		1
Sale-leaseback transaction sale price		$ 100,500
Pre-tax net gain sale-leaseback		78,500
Operating leases, ROU assets		$ 78,400
Operating lease, term of contract		12 years
Operating lease cost		$ 7,900