CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019		Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends Declared per Common Share	$ 0.3		$ 0.25
Accelerated share repurchases
Common stock purchases	$ 253,119	[1]	$ 1,328
Accelerate Share Repurchase
Accelerated share repurchases
Common stock purchases	$ 250,000

[1] On February 28, 2019, the Corporation entered into a $250 million accelerated share repurchase transaction with respect to its common stock, which was accounted for as a treasury stock transaction. Refer to Note 18 for additional information.