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Debt Obligations and Commitments - Additional Information (Detail) - USD ($)
$ in Millions
8 Months Ended
Sep. 05, 2015
Jun. 13, 2015
Jun. 09, 2014
Debt Instrument [Line Items]      
Repayments of Debt $ 4,100.0    
Commercial Paper 2,200.0    
Unrecorded Unconditional Purchase Obligation $ 1,500.0    
Notes Due 2025 [Member] [Member] | Two Point Seven Five Zero Percent Notes Due 2025 [Member] [Member] [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage   2.75%  
Debt Instrument, Face Amount   $ 1,000.0  
Notes Due 2025 [Member] [Member] | Three Point Five Zero Percent Notes Due 2025 [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 3.50%    
Debt Instrument, Face Amount $ 700.0    
Notes Due 2045 [Member] | Four Point Six Zero Percent Notes Due 2045 [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 4.60%    
Debt Instrument, Face Amount $ 500.0    
Notes Due 2020 [Member] | One Point Eight Five Zero Percent Notes Due 2020 [Member] [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage   1.85%  
Debt Instrument, Face Amount   $ 750.0  
Notes Due 2022 [Member] | Three Point One Zero Percent Notes Due 2022 [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 3.10%    
Debt Instrument, Face Amount $ 800.0    
Notes Due 2018 [Member] | Variable Rate      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount   $ 250.0  
Notes Due 2018 [Member] | One Point Two Five Zero Percent Notes Due 2018 [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage   1.25%  
Debt Instrument, Face Amount   $ 500.0  
Notes Due 2017 [Member] | Variable Rate      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 600.0    
Notes Due 2017 [Member] | One Point One Two Five Percent Notes Due 2017 [Member]      
Debt Instrument [Line Items]      
Debt Instrument, Interest Rate, Stated Percentage 1.125%    
Debt Instrument, Face Amount $ 650.0    
Five-Year Unsecured Revolving Credit Agreement (Five-Year Credit Agreement) [Member]      
Debt Instrument [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity 4,500.0    
Line of Credit Facility, Current Borrowing Capacity 3,722.5   $ 3,772.5
364-Day Unsecured Revolving Credit Agreement (364-Day Credit Agreement) [Member]      
Debt Instrument [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity 4,500.0    
Line of Credit Facility, Current Borrowing Capacity $ 3,722.5   $ 3,772.5