Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2018

Stock-Based Compensation Plans

Schedule of stock option activity

				Weighted Average
				Remaining	Aggregate
	Option	Weighted Average		Contractual Term	Intrinsic Value
Stock Options	Shares	Exercise Price		(in years)	(in millions)
Outstanding at January 1, 2016	934,325	$	50.26
Exercised	(753,645)		49.70
Outstanding at December 31, 2016	180,680		52.61
Exercised	(98,405)		52.41
Expired or forfeited	(7,000)		58.68
Outstanding at December 31, 2017	75,275		52.30
Exercised	(48,275)		57.91
Expired or forfeited	(1,000)		55.73
Outstanding at December 31, 2018	26,000	$	41.76	0.9	$	0.8
Exercisable at December 31, 2018	26,000	$	41.76	0.9	$	0.8

Summary of certain information concerning outstanding and exercisable options

		Weighted Average
	Outstanding and	Remaining	Weighted Average
Range of	Exercisable at	Contractual Life	Exercise Price
Exercise Price	December 31, 2018	in Years	Per Share
$38	12,000	0.4	$	38.00
$44 - $45	14,000	1.4		44.99
$38 - $45	26,000	0.9	$	41.76

Summary of the status of the Company's restricted stock units and changes during the year

		Weighted Average
		Grant Date Fair
Unvested RSUs	Shares	Value Per RSU
Unvested at January 1, 2018	924,575	$	74.09
Granted	474,715		84.26
Vested	(484,858)		69.32
Canceled or forfeited	(24,602)		76.72
Unvested at December 31, 2018	889,830	$	82.05