Incentive Compensation Plans Stock-based Compensation, Grants in Period Weighted Average (Tables)

12 Months Ended

Dec. 31, 2019

Summary of Stock Options Assumptions [Abstract]

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

Stock-based compensation awards expected to be settled in cash have been classified as liabilities in our Consolidated Balance Sheets as of December 31, 2019 and 2018.

	Years ended December 31,
	2019		2018		2017
Stock-Settled Awards:
Awards granted	2.5		2.1		0.8
Weighted-average grant-date fair value (per award)	$	22.78	$	23.60	$	24.18
Total fair value of vested awards distributed	$	15.2	$	24.2	$	22.6
Cash-Settled Awards:
Awards granted	0.0		0.1		0.0
Weighted-average grant-date fair value (per award)	$	22.83	$	23.62	$	23.33
Total fair value of vested awards distributed	$	0.9	$	0.8	$	0.9
Performance-Based Awards:
Awards granted	2.1		2.9		4.8
Weighted-average grant-date fair value (per award)	$	20.16	$	21.13	$	20.06
Total fair value of vested awards distributed	$	64.9	$	87.2	$	112.4