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Significant Risks And Uncertainties - Additional Information (Detail)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Novation      
Unusual Risk or Uncertainty [Line Items]      
Customer revenue as a percentage of net revenue   33.00% 33.00%
Novation | Minimum      
Unusual Risk or Uncertainty [Line Items]      
Customer revenue as a percentage of net revenue 32.00% 32.00% 32.00%
Novation | Maximum      
Unusual Risk or Uncertainty [Line Items]      
Customer revenue as a percentage of net revenue 33.00%    
Medassets | Minimum      
Unusual Risk or Uncertainty [Line Items]      
Customer revenue as a percentage of net revenue 24.00% 24.00% 24.00%
Medassets | Maximum      
Unusual Risk or Uncertainty [Line Items]      
Customer revenue as a percentage of net revenue 26.00% 26.00% 26.00%
Premier | Minimum      
Unusual Risk or Uncertainty [Line Items]      
Customer revenue as a percentage of net revenue 21.00% 21.00% 21.00%
Premier | Maximum      
Unusual Risk or Uncertainty [Line Items]      
Customer revenue as a percentage of net revenue 24.00% 24.00% 24.00%
Covidien Ltd.      
Unusual Risk or Uncertainty [Line Items]      
Sales of product from supplier as a percentage of revenue   13.00% 13.00%
Covidien Ltd. | Minimum      
Unusual Risk or Uncertainty [Line Items]      
Sales of product from supplier as a percentage of revenue 13.00%    
Johnson & Johnson Healthcare Systems, Inc. | Minimum      
Unusual Risk or Uncertainty [Line Items]      
Sales of product from supplier as a percentage of revenue 9.00% 9.00% 9.00%
Johnson & Johnson Healthcare Systems, Inc. | Maximum      
Unusual Risk or Uncertainty [Line Items]      
Sales of product from supplier as a percentage of revenue 10.00% 10.00% 10.00%