XML 80 R38.htm IDEA: XBRL DOCUMENT v3.3.0.814
Marketable Investment Securities - Schedule of Maturities of Debt Securities Classified as Cash Equivalents and Available-For-Sale Securities (Detail) - USD ($)
$ in Millions
Sep. 30, 2015
Jun. 30, 2015
Sep. 30, 2014
Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Amortized cost $ 87.4 $ 64.1 $ 69.8 $ 64.8
Due within one year, Amortized cost 68.0      
Due after one year through five years, Amortized cost 42.9      
Due after five years, Amortized cost 0.0      
Total 198.3 185.4    
Due within one year, Estimated fair value 68.0      
Due after one year through five years, Estimated fair value 43.1      
Due after five years, Estimated fair value 0.0      
Total 198.5 185.4    
Cash        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Amortized cost 67.7 54.7    
Cash equivalents, Estimated fair value 67.7 54.7    
Cash Equivalents        
Schedule of Available-for-sale Securities [Line Items]        
Cash equivalents, Amortized cost 19.7 9.4    
Cash equivalents, Estimated fair value $ 19.7 $ 9.4