Incentive Compensation Plans Plan Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)
Share-based Payment Arrangement [Abstract]
Performance cash awards granted during the period target value	$ 43.3
Restricted cash awards granted during the period target value	$ 36.2
Performance based cash award vesting period	3 years
Restricted cash awards vesting period floor	2 years
Cash awards vesting period	3 years