Incentive Compensation Plans Employee Stock Purchase Plans (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Employee Stock Ownership Plan (ESOP), Shares in ESOP [Abstract]
Maximum Employee Subscription Rate	10.00%
Maximum Number of Shares Per Employee	900
Employee Stock Purchase Plan description	90% of the lesser of the average market price of a share on the first business day of the offering period or the average market price of a share on the last business day of the offering period of three months
Stock Issued During Period, Shares, Employee Stock Purchase Plans	200,000	0
Employee Stock Ownership Plan (ESOP), Shares Contributed to ESOP	10,000,000