Incentive Compensation Plans Plan Information (Details) shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($) shares
Share-based Payment Arrangement [Abstract]
Common stock initially available for grants of all equity awards under the 2019 PIP | shares	27.0
Number of shares that may be awarded to any one participant for any stock based awards in the aggregate | shares	2.0
2019 PIP target performance cash award percentage range	range from 0% to 300% of the target amount
Upper limit of 2019 PIP cash awards granted during a performance period per individual	$ 10.0
Performance cash awards granted during the period target value	40.6
Restricted cash awards granted during the period target value	$ 20.3
Cash awards vesting period	3 years