Financial Information - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jan. 01, 2019
Product Information [Line Items]
Performance obligation, description of timing	one year or less
Operating lease right-of use assets	$ 178,098
Operating lease liabilities	199,063
Non-Interest income
Product Information [Line Items]
Accounts receivable	$ 9,100
Accounting Standards Update 2016-02
Product Information [Line Items]
Operating lease right-of use assets		$ 185,000
Operating lease liabilities		$ 204,000