Share-based Compensation Arrangement by Share-based Payment Award, Number of Compensation Plans

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Amount of benefit recorded in the statement of income as a result of re-evaluation of performance-based restricted stock Units granted.

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- Definition

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other Than Options, EBITDA Performance Target

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Percentage of Target Shares Forfeited

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

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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.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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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.

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- Definition

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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- Definition

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

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No definition available.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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- Definition

Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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Stock-based Compensation - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) plan shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares	Mar. 31, 2019 USD ($)	May 11, 2017 shares	Dec. 31, 2003 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of compensation plans \| plan	2
Total stock-based compensation expense	$ 26.8	$ 24.8	$ 13.3
Stock options granted \| shares			0
Total intrinsic value of options exercised	5.9	3.9	$ 5.4
Cash received from exercise of stock options	17.8	4.6	12.8
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	4.9	6.7	7.1
Performance-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 1.4	$ 2.5	(6.5)
Revaluation benefit from PRSU Granted			$ 9.3
Nonvested outstanding \| shares	800,000	2,000,000.0	2,700,000
Restricted Stock Units and Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 20.5	$ 15.6	$ 12.7
Nonvested outstanding \| shares	1,200,000	800,000	600,000
Aggregate intrinsic value of RSUs and DSUs vested during the period	$ 14.7
Long Term Incentive Plan 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock shares to be issued (in shares) \| shares					8,700,000
Amended And Restated 2003 Equity Incentive Plan \| Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock shares to be issued (in shares) \| shares						11,500,000
Aspirational Plan 2019 \| Performance-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding (in shares) \| shares	800,000
Aspirational Plan 2017 \| Performance-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum adjusted EBITDA				$ 650.0
Percentage of target shares forfeited	66.66%	33.33%
Vesting Scenario One \| Aspirational Plan 2019 \| Performance-based Restricted Stock Units \| Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum adjusted EBITDA	$ 600.0
Award vesting rights, percentage	66.00%
Vesting Scenario Two \| Aspirational Plan 2019 \| Performance-based Restricted Stock Units \| Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum adjusted EBITDA	$ 650.0
Award vesting rights, percentage	100.00%
Vesting Scenario Four \| Aspirational Plan 2019 \| Performance-based Restricted Stock Units \| Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum adjusted EBITDA	$ 600.0
Minimum \| Aspirational Plan \| Performance-based Restricted Stock Units \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	33.1
Minimum \| Vesting Scenario Three \| Aspirational Plan 2019 \| Performance-based Restricted Stock Units \| Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum adjusted EBITDA	600.0
Maximum \| Aspirational Plan \| Performance-based Restricted Stock Units \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	49.7
Maximum \| Vesting Scenario Three \| Aspirational Plan 2019 \| Performance-based Restricted Stock Units \| Tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum adjusted EBITDA	650.0
Maximum \| Vesting Scenario Three \| Aspirational Plan 2019 \| Performance-based Restricted Stock Units \| Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum adjusted EBITDA	$ 650.0