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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Segment
Campus
Dec. 31, 2012
Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of reporting segment 6    
Number of campuses 6    
Number of additional campuses 4    
Percentage of cash receipts from Title IV Program funding 78.00% 80.00% 83.00%
Loans disbursed under Credit Agreement secured by cash, percentage 100.00%    
Number of days past due to write off student receivables Greater than 90 days    
Cumulative translation adjustments $ 10.0    
Accumulated other comprehensive gain (loss) included a comprehensive loss related to foreign currency translations   4.3  
Costs of other goods and services included in educational services and facilities expense 39.7 55.8 79.9
Advertising costs 272.0 302.0 276.3
Maximum [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Maturity period of Cash equivalents including short-term investments 90 days    
Accumulated other comprehensive gain (loss) included a comprehensive loss related to foreign currency translations $ 0.1    
Health Education [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of campuses 4    
Design & Technology [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of campuses 2    
Student Loans [Member] | Minimum [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Student receivables period 1 year    
Student Loans [Member] | Maximum [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Student receivables period 1 year    
Non Current Assets [Member] | Student Loans [Member] | Minimum [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Student receivables period 1 year    
Non Current Assets [Member] | Student Loans [Member] | Maximum [Member]
      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Student receivables period 6 years