Schedule of Share Based Compensation Stock Options (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Intrinsic Value of Stock Options Exercised	$ 34.1	$ 9.4	$ 89.4	$ 41.7
Stock Compensation Expense Related to Stock Option Awards	$ 1.6	$ 1.7	$ 12.8	$ 13.1
Issued Stock Options	0.0	0.0	2.0	2.2
Weighted Average Fair Value of Stock Options issued (per share)	$ 0.0	$ 0.0	$ 7.58	$ 6.87
Fair Value of Stock Options Issued	$ 0.0	$ 0.0	$ 15.4	$ 14.8

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Net number of share options (or share units) granted during the period.

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-Publisher FASB
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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The fair value of stock issued in noncash financing activities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

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