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Equity-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Equity-based compensation [Abstract] |  |  |
Equity-based compensation expense | $ 40.7 | $ 43.7 | $ 39.2
Income tax benefit | (9.9) | (15.3) | (13.3)
Equity-based compensation expense (net of tax) | 30.8 | $ 28.4 | 25.9
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized [Abstract] |  |  |
Compensation cost not yet recognized | $ 36.0 |  |
Compensation cost not yet recognized, period for recognition | 1 year 8 months 12 days |  |
Stock option contractual life | 10 years |  |
Number of Options (in shares): |  |  |
Options outstanding, beginning (in shares) | 4,457,996 |  |
Granted (in shares) | 1,021,398 |  |
Forfeitures/Expired (in shares) | (63,372) |  |
Exercised (in shares) | (935,250) |  |
Options outstanding, ending (in shares) | 4,480,772 | 4,457,996 |
Options Weighted Average Exercise Price (in dollars per share): |  |  |
Options outstanding, beginning weighted-average exercise price (in dollars per share) | $ 37.41 |  |
Grants, weighted average exercise price (in dollars per share) | 73.85 |  |
Forfeitures and Expirations, weighted average exercise price (in dollars per share) | 59.85 |  |
Exercises, weighted average exercise price (in dollars per share) | 30.59 |  |
Options outstanding, ending weighted-average exercise price (in dollars per share) | $ 46.82 | $ 37.41 |
Options, Additional Disclosures: |  |  |
Options, exercisable (in shares) | 2,423,693 |  |
Options, vested and expected to vest, Outstanding (in shares) | 2,031,401 |  |
Options, exercisable, weighted average exercise price (in dollars per share) | $ 32.67 |  |
Options, vested and expected to vest, weighted average exercise price (in dollars per share) | $ 63.43 |  |
Options, outstanding, weighted average remaining contractual term | 7 years 14 days |  |
Options, exercisable, weighted average remaining contractual term (years) | 5 years 9 months 14 days |  |
Options, vested and expected to vest, outstanding, weighted average remaining contractual term (in years) | 8 years 6 months 7 days |  |
Options, outstanding intrinsic value | $ 153.5 |  |
Options, exercisable, Intrinsic Value | 117.3 |  |
Options, vested and expected to vest, aggregate intrinsic value | 35.9 |  |
Total intrinsic value of stock options exercised | $ 47.0 | $ 17.0 | $ 7.0
Award vesting period | 3 years |  |
Employee Stock Option |  |  |
Fair Value Assumptions: |  |  |
Grant date fair value (in dollars per share) | $ 14.80 | $ 12.27 | $ 8.55
Volatility (as percent) | 20.00% | 22.00% | 25.00%
Risk-free rate (as percent) | 2.75% | 2.08% | 1.47%
Expected dividend yield (as percent) | 1.14% | 1.09% | 1.08%
Expected term (in years) | 6 years | 6 years | 6 years
Restricted Stock Units (RSUs) |  |  |
Options, Additional Disclosures: |  |  |
Award vesting period | 4 years |  |
Number of Units (in shares): |  |  |
Nonvested beginning of period (in shares) | 131,069 |  |
Grants (in shares) | 177,525 |  |
Vested (in shares) | (26,886) |  |
Forfeited (in shares) | (21,535) |  |
Nonvested end of period (in shares) | 260,173 | 131,069 |
Equity Instruments Other Than Options, Weighted Average Grant Date Fair Value (in dollars per share): |  |  |
Beginning nonvested, weighted average grant date fair value (in dollars per share) | $ 40.11 |  |
Granted, weighted average grant date fair value (in dollars per share) | 73.95 | $ 58.90 | $ 39.82
Vested, weighted average grant date fair value (in dollars per share | 60.18 |  |
Forfeited, weighted average grant date fair value (in dollars per share | 60.25 |  |
Ending nonvested, weighted average grant date fair value (in dollars per share) | $ 59.56 | $ 40.11 |
Vested in period, fair value (less than) | $ 2.0 | $ 18.0 | $ 1.0
Performance Share Units (PSUs) |  |  |
Options, Additional Disclosures: |  |  |
Award vesting period | 3 years |  |
Number of Units (in shares): |  |  |
Nonvested beginning of period (in shares) | 418,973 |  |
Grants (in shares) | 204,890 |  |
Attainment Adjustment (in shares) | 154,234 |  |
Vested (in shares) | (334,255) |  |
Forfeited (in shares) | (22,005) |  |
Nonvested end of period (in shares) | 421,837 | 418,973 |
Equity Instruments Other Than Options, Weighted Average Grant Date Fair Value (in dollars per share): |  |  |
Beginning nonvested, weighted average grant date fair value (in dollars per share) | $ 50.75 |  |
Granted, weighted average grant date fair value (in dollars per share) | 73.74 | $ 59.00 | $ 39.91
Attainment Adjustment, weighted average grant date fair value (in dollars per share) | 37.84 |  |
Vested, weighted average grant date fair value (in dollars per share | 39.92 |  |
Forfeited, weighted average grant date fair value (in dollars per share | 59.87 |  |
Ending nonvested, weighted average grant date fair value (in dollars per share) | $ 65.85 | $ 50.75 |
Vested in period, fair value (less than) | $ 13.0 | $ 20.0 | $ 9.0
Performance Share Awards (PSAs) |  |  |
Options, Additional Disclosures: |  |  |
Award vesting period | 3 years |  |
Number of Units (in shares): |  |  |
Nonvested beginning of period (in shares) | 122,467 |  |
Grants (in shares) | 1,279 |  |
Attainment Adjustment (in shares) | 111,565 |  |
Vested (in shares) | (227,298) |  |
Forfeited (in shares) | (8,013) |  |
Nonvested end of period (in shares) | 0 | 122,467 |
Equity Instruments Other Than Options, Weighted Average Grant Date Fair Value (in dollars per share): |  |  |
Beginning nonvested, weighted average grant date fair value (in dollars per share) | $ 40.08 |  |
Granted, weighted average grant date fair value (in dollars per share) | 0 | $ 0.00 | $ 40.06
Attainment Adjustment, weighted average grant date fair value (in dollars per share) | 37.79 |  |
Vested, weighted average grant date fair value (in dollars per share | 40.12 |  |
Forfeited, weighted average grant date fair value (in dollars per share | 39.79 |  |
Ending nonvested, weighted average grant date fair value (in dollars per share) | $ 0 | $ 40.08 |
Vested in period, fair value (less than) | $ 9.0 | $ 5.0 | $ 0.0
Minimum | Performance Share Units (PSUs) |  |  |
Equity Instruments Other Than Options, Weighted Average Grant Date Fair Value (in dollars per share): |  |  |
Potential vesting percentage range of shares | 0.00% |  |
Minimum | Performance Share Awards (PSAs) |  |  |
Equity Instruments Other Than Options, Weighted Average Grant Date Fair Value (in dollars per share): |  |  |
Potential vesting percentage range of shares | 0.00% |  |
Maximum | Performance Share Units (PSUs) |  |  |
Equity Instruments Other Than Options, Weighted Average Grant Date Fair Value (in dollars per share): |  |  |
Potential vesting percentage range of shares | 200.00% |  |
Maximum | Performance Share Awards (PSAs) |  |  |
Equity Instruments Other Than Options, Weighted Average Grant Date Fair Value (in dollars per share): |  |  |
Potential vesting percentage range of shares | 200.00% |  |
2013 Long Term Incentive Plan |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized [Abstract] |  |  |
Number of shares authorized (in shares) | 15,500,000 |  |
Number of share available for grant (in shares) | 4,978,336 |  |
Equity Instruments Other Than Options, Weighted Average Grant Date Fair Value (in dollars per share): |  |  |
Options nonvested number of shares (in shares) | 3,798,508 |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References No definition available. + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average expected volatility rate of share-based compensation awards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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