Financial Information - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019
Product Information [Line Items]
Performance obligation, description of timing	one year or less
Operating lease right-of use assets	$ 179,028
Operating lease liabilities	198,091
Non-Interest income
Product Information [Line Items]
Accounts receivable	$ 7,900
Accounting Standards Update 2016-02
Product Information [Line Items]
Operating lease right-of use assets		$ 185,000
Operating lease liabilities		$ 204,000