v3.3.1.900

Employee Stock and Benefit Plans (Options Outstanding and Vested) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares, outstanding	7,579,058
Weighted average exercise price per share, outstanding (in dollar per share)	$ 16.88
Weighted average remaining contractual life, outstanding	5 years 10 months 24 days
Number of shares, vested	5,166,845
Weighted average exercise price per share, vested (in dollar per share)	$ 9.79
Stock Options
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average grant date fair value (in dollars per share)	$ 16.51	$ 12.07	$ 7.62
Aggregate grant date fair value	$ 25.2	$ 33.1	$ 15.2
Intrinsic value of options exercised	$ 22.7	$ 25.7	$ 11.1
$1.40 - $1.40
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	$ 1.40
Exercise price range, upper limit (in dollar per share)	$ 1.40
Number of shares, outstanding	156,259
Weighted average exercise price per share, outstanding (in dollar per share)	$ 1.40
Weighted average remaining contractual life, outstanding	5 months 26 days
Number of shares, vested	156,259
Weighted average exercise price per share, vested (in dollar per share)	$ 1.40
$1.90 - $1.90
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	1.90
Exercise price range, upper limit (in dollar per share)	$ 1.90
Number of shares, outstanding	940,082
Weighted average exercise price per share, outstanding (in dollar per share)	$ 1.90
Weighted average remaining contractual life, outstanding	1 year 25 days
Number of shares, vested	940,082
Weighted average exercise price per share, vested (in dollar per share)	$ 1.90
$2.10 - $2.80
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	2.10
Exercise price range, upper limit (in dollar per share)	$ 2.80
Number of shares, outstanding	415,220
Weighted average exercise price per share, outstanding (in dollar per share)	$ 2.63
Weighted average remaining contractual life, outstanding	2 years 10 months 27 days
Number of shares, vested	415,220
Weighted average exercise price per share, vested (in dollar per share)	$ 2.63
$3.80 - $3.80
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	3.80
Exercise price range, upper limit (in dollar per share)	$ 3.80
Number of shares, outstanding	1,117,235
Weighted average exercise price per share, outstanding (in dollar per share)	$ 3.80
Weighted average remaining contractual life, outstanding	3 years 10 months 20 days
Number of shares, vested	1,117,235
Weighted average exercise price per share, vested (in dollar per share)	$ 3.80
$4.10 - $8.90
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	4.10
Exercise price range, upper limit (in dollar per share)	$ 8.90
Number of shares, outstanding	868,867
Weighted average exercise price per share, outstanding (in dollar per share)	$ 6.16
Weighted average remaining contractual life, outstanding	5 years 4 months 27 days
Number of shares, vested	842,958
Weighted average exercise price per share, vested (in dollar per share)	$ 6.08
$9.40 - $16.68
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	9.40
Exercise price range, upper limit (in dollar per share)	$ 16.68
Number of shares, outstanding	786,624
Weighted average exercise price per share, outstanding (in dollar per share)	$ 13.13
Weighted average remaining contractual life, outstanding	6 years 10 months 24 days
Number of shares, vested	606,364
Weighted average exercise price per share, vested (in dollar per share)	$ 12.95
$19.26 - $26.86
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	19.26
Exercise price range, upper limit (in dollar per share)	$ 26.86
Number of shares, outstanding	1,156,772
Weighted average exercise price per share, outstanding (in dollar per share)	$ 24.00
Weighted average remaining contractual life, outstanding	8 years 1 month 17 days
Number of shares, vested	575,066
Weighted average exercise price per share, vested (in dollar per share)	$ 23.69
$30.58 - $30.58
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	30.58
Exercise price range, upper limit (in dollar per share)	$ 30.58
Number of shares, outstanding	827,997
Weighted average exercise price per share, outstanding (in dollar per share)	$ 30.58
Weighted average remaining contractual life, outstanding	8 years 7 months 27 days
Number of shares, vested	423,645
Weighted average exercise price per share, vested (in dollar per share)	$ 30.58
$34.97 - $37.28
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	34.97
Exercise price range, upper limit (in dollar per share)	$ 37.28
Number of shares, outstanding	824,344
Weighted average exercise price per share, outstanding (in dollar per share)	$ 36.31
Weighted average remaining contractual life, outstanding	8 years 8 months 12 days
Number of shares, vested	14,381
Weighted average exercise price per share, vested (in dollar per share)	$ 37.18
$40.68 - $52.14
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit (in dollar per share)	40.68
Exercise price range, upper limit (in dollar per share)	$ 52.14
Number of shares, outstanding	485,658
Weighted average exercise price per share, outstanding (in dollar per share)	$ 45.13
Weighted average remaining contractual life, outstanding	8 years 10 months 17 days
Number of shares, vested	75,635
Weighted average exercise price per share, vested (in dollar per share)	$ 41.39

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Granted in Period, Total Fair Value

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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.

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

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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