v3.5.0.2
Income Taxes - Additional Information Regarding Examinations (Detail) - USD ($)
$ in Billions
3 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Mar. 31, 2011
Jun. 30, 2016
Income Tax Examination [Line Items]        
Tax contingencies and other tax liabilities $ 12.3     $ 11.8
Internal Revenue Service (IRS) | Earliest Tax Year        
Income Tax Examination [Line Items]        
Tax years under audit   2007 2004  
Tax years subject to examination 2010      
Internal Revenue Service (IRS) | Latest Tax Year        
Income Tax Examination [Line Items]        
Tax years under audit   2009 2006  
Tax years subject to examination 2016      
Foreign Country | Earliest Tax Year        
Income Tax Examination [Line Items]        
Tax years subject to examination 1996      
Foreign Country | Latest Tax Year        
Income Tax Examination [Line Items]        
Tax years subject to examination 2016