Compensation Plans Outstanding Longer Term Incentive Awards (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Outstanding Long Term Incentive Awards [Line Items]
Target Shares Issuable as Long Term Incentive Awards	$ 20,860	$ 15,726
Maximum Shares Issuable as Long Term Incentive Awards	41,720	31,452
Unrecognized Compensation Cost - Long Term Incentives	$ 705,000	$ 440,000
Share-based Compensation Arrangement By Share-based Payment Award, Grants In Period, Weighted Average Grant Date Fair Value	$ 47,460	$ 50,190