STOCK-BASED COMPENSATION, Share-based Arrangements with Employees and Nonemployees (Details) (USD $) In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | |||||||||
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Sep. 30, 2011 |
Sep. 30, 2011
Azoff Trust Note [Member]
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Sep. 30, 2010
Azoff Trust Note [Member]
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Sep. 30, 2011
Azoff Trust Note [Member]
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Sep. 30, 2010
Azoff Trust Note [Member]
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Sep. 30, 2011
Restricted Stock [Member]
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Sep. 30, 2011
Market-based or performance-based awards [Member]
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Sep. 30, 2011
Stock Options [Member]
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Sep. 30, 2011
Ticketmaster [Member]
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Sep. 30, 2010
Ticketmaster [Member]
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Sep. 30, 2011
Ticketmaster [Member]
Selling, general, and administrative expenses [Member]
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Sep. 30, 2010
Ticketmaster [Member]
Selling, general, and administrative expenses [Member]
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Sep. 30, 2011
Ticketmaster [Member]
Corporate expenses [Member]
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Sep. 30, 2010
Ticketmaster [Member]
Corporate expenses [Member]
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Sep. 30, 2010
Ticketmaster [Member]
Employee Severance [Member]
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Sep. 30, 2010
Ticketmaster [Member]
Employees with change in control provisions in employment contracts [Member]
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Mar. 31, 2011
Front Line [Member]
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Mar. 31, 2011
Front Line [Member]
Selling, general, and administrative expenses [Member]
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|
Share-based arrangements with employees and nonemployees [Abstract] | ||||||||||||||||||
Restricted stock granted during period (in shares) | 0.7 | 0.3 | ||||||||||||||||
Fair market value of shares awarded | $ 6.7 | $ 2.7 | $ 13.0 | |||||||||||||||
Stock options granted during period (in shares) | 2.5 | |||||||||||||||||
Vesting period | 4Y | 4Y | 4Y | |||||||||||||||
Stock-based compensation | 0 | 14.7 | 0 | 6.4 | 0 | 8.3 | 24.4 | 24.4 | ||||||||||
Shares accelerated and modified vesting (in shares) | 1.4 | 1.1 | ||||||||||||||||
Total unrecognized compensation cost | 69.4 | |||||||||||||||||
Interest rate on note issued (in hundredths) | 3.00% | 3.00% | ||||||||||||||||
Payable in monthly installments | 0.8 | |||||||||||||||||
Corporate expenses related to Azoff Trust note | $ 1.6 | $ 1.6 | $ 4.8 | $ 4.3 |