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Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2016

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, 2014		1,937,241		$	49.35
Exercised		(593,204)			48.58
Expired or forfeited		(16,625)			52.13
Outstanding at December 31, 2014		1,327,412			49.66
Exercised		(390,606)			48.19
Expired or forfeited		(2,481)			51.96
Outstanding at December 31, 2015		934,325			50.26
Exercised		(753,645)			49.70
Outstanding at December 31, 2016		180,680		$	52.61		1.3		$	4.9
Exercisable at December 31, 2016		180,680		$	52.61		1.3		$	4.9

Summary of certain information concerning outstanding and exercisable options

				Options Outstanding					Options Exercisable
				Weighted Average							Weighted Average
				Remaining		Weighted					Exercise
Range of		Outstanding at		Contractual Life		Average			Exercisable at		Price of Options
Exercise Price		December 31, 2016		in Years		Exercise Price			December 31, 2016		Exercisable
$38		12,000		2.4		$	38.00		12,000		$	38.00
$42 - $45		45,225		1.4			43.68		45,225			43.68
$55 - $56		99,455		1.1			55.73		99,455			55.73
$61 - $67		24,000		0.9			63.81		24,000			63.81
$38 - $67		180,680		1.3		$	52.61		180,680		$	52.61

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

				Weighted
				Average Grant
Unvested Shares		Shares		Date Fair Value
Unvested at January 1, 2016		900,410		$	63.26
Granted		524,746			69.20
Forfeited		(93,814)			67.90
Vested		(345,802)			67.96
Unvested at December 31, 2016		985,540		$	64.34

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Tabular disclosure of the changes in outstanding nonvested restricted stock and restricted stock units.

+ References

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- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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