Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2019

Schedule of Changes in Stock Options

	Number of shares (thousands)			Weighted-average exercise price		Weighted-average remaining contractual term (years)		Aggregate intrinsic value (millions)
Option shares outstanding, December 31, 2018		602.5		$	41.71
Option shares exercised		(341.4	)		42.38
Option shares outstanding, December 31, 2019		261.1		$	40.84		2.6	$	13.9
Option shares exercisable, vested and expected to vest,      December 31, 2019		261.1		$	40.84		2.6	$	13.9

Schedule of Information Related to Stock Option Exercises

The following table presents information related to stock option exercises:

	2019		2018		2017
Total intrinsic value of stock options exercised	$	15.9	$	23.7	$	0.9
Cash proceeds received from stock options exercised	$	14.5	$	18.4	$	3.3
Tax deduction (expense) realized from stock options exercised	$	3.3	$	6.1	$	(0.2	)

Schedule of Restricted Stock and Restricted Stock Units Activity

	Non-Vested Stock Awards
	RSUs						PSUs
	Number of shares (thousands)			Weighted- average fair value at grant date			Number of shares (thousands)			Weighted- average fair value at grant date
December 31, 2018		100.3		$	48.69			503.2		$	45.14
Granted		34.9			82.99			118.6			76.05
Performance adjustments		-			-			273.8			38.66
Vested		(62.0	)		(46.32	)		(513.8	)		(38.89	)
Forfeited		(7.8	)		(64.18	)		(24.1	)		(63.48	)
December 31, 2019		65.4		$	66.49			357.7		$	58.27

PSUs [Member]

Schedule of Weighted-Average Assumptions

	2019			2018
Weighted-average grant date fair value of market-based PSUs granted (dollars per award)	$	77.80		$	53.01
Assumptions
Risk-free rate of return		2.4	%		2.4	%
Expected volatility		25.9	%		26.3	%
Expected term (in years)		3.1			3.1
Expected dividend yield		0.0	%		0.0	%