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Derivatives and Foreign Exchange Risk Management (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Apr. 29, 2011
Apr. 30, 2010
Apr. 24, 2009
Apr. 29, 2011
Other Expense [Member]
Apr. 30, 2010
Other Expense [Member]
Apr. 29, 2011
Cost of Sales [Member]
Apr. 30, 2010
Cost of Sales [Member]
Apr. 29, 2011
Prepaid Expenses and Other Current Assets [Member]
Apr. 30, 2010
Prepaid Expenses and Other Current Assets [Member]
Apr. 29, 2011
Other Assets [Member]
Apr. 30, 2010
Other Assets [Member]
Apr. 29, 2011
Other Accrued Expenses [Member]
Apr. 30, 2010
Other Accrued Expenses [Member]
Apr. 29, 2011
Other Long Term Liabilities Fx [Member]
Apr. 30, 2010
Other Long Term Liabilities Fx [Member]
Mar. 31, 2011
Interest Rate Swap March 2011 [Member]
Apr. 29, 2011
Interest Rate Swap March 2011 [Member]
Mar. 31, 2010
Interest Rate Swap March 2011 [Member]
Mar. 31, 2010
Interest Rate Swaps 12 March 2010 [Member]
HedgeContract
Apr. 29, 2011
Interest Rate Swaps 12 March 2010 [Member]
Mar. 31, 2010
Interest Rate Swaps 9 March 2010 [Member]
Mar. 31, 2010
Interest Rate Swaps 3 March 2010 [Member]
Mar. 31, 2010
Interest Rate Swaps 9 March 2.2 Billion [Member]
Apr. 29, 2011
Interest Rate Swaps 9 March 2.2 Billion [Member]
Mar. 31, 2010
Terminated Interest Rate Swap [Member]
Apr. 29, 2011
Terminated Interest Rate Swap [Member]
Dec. 31, 2009
Interest Rate Swap Dec 2009 [Member]
Apr. 29, 2011
Interest Rate Swap Dec 2009 [Member]
Dec. 31, 2009
Interest Rate Swap Dec 2009-1 [Member]
Dec. 31, 2009
Interest Rate Swap Dec 2009-2 [Member]
Dec. 31, 2009
Interest Rate Swap Dec 2009-3 [Member]
Jun. 30, 2009
Interest Rate Swap June 2009 [Member]
Apr. 29, 2011
Interest Rate Swap June 2009 [Member]
Jun. 30, 2009
Interest Rate Swap June 2009-1 [Member]
Jun. 30, 2009
Interest Rate Swap June 2009-2 [Member]
Concentrations of Credit Risk (Numeric) [Abstract]                                                                      
Collateral Already Posted, Aggregate Fair Value $ 8                                                                    
Cash Collateral Received from Counterparty   123                                                                  
General Discussion of Derivative Instruments and Hedging Activities [Abstract]                                                                      
Notional Amount of Foreign Currency Derivatives 6,834 5,495                                                                  
Foreign Currency Transaction Gain (Loss) Realized 92 56 (53)                                                                
Foreign Currency Derivative Instruments Not Designated As Hedging Instruments [Abstract]                                                                      
Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments 2,453 1,839                                                                  
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments (107) (118)                                                                  
Summary Of Cash Flow Hedge Activity [Abstract]                                                                      
Notional Amount of Cash Flow Hedge Instruments 4,381 3,656                                                                  
Maximum Length of Time Hedged in Cash Flow Hedge (in months) 36M                                                                    
Unrealized Gain (Loss) on Cash Flow Hedging Instruments recorded in AOCL (257) 91                                                                  
Cash Flow Hedge Gain (Loss) to Be Reclassified Within Twelve Months 192                                                                    
Derivative Instruments Gain (Loss) by Hedging Relationship By Income Statement Location by Derivative Instrument Risk [Line Items]                                                                      
Derivative Instruments Gain (Loss) Recognized in Other Comprehensive Income Effective Portion Net (530) (212)   (530) (212)                                                            
Derivative Instruments Gain (Loss) Reclassified From Accumulated OCI Into Income Effective Portion Net 81 46   50 1 31 45                                                        
Derivatives and Foreign Exchange Risk Management (Numeric) [Abstract]                                                                      
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net (4) (2)                                                                  
Unrealized Gain (Loss) on Fair Value Hedging Instruments 109 31                                                                  
Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge (110) (33)                                                                  
Derivatives and Foreign Exchange Risk Management Balance Sheet [Line Items]                                                                      
Foreign Exchange Contract, Derivative Asset Designated as Hedging Instrument, Fair Value               19 198 1 65                                                
Interest Rate Contract, Derivative Asset Designated as Hedging Instrument, Fair Value                   109 31                                                
Derivative Asset Designated as Hedging Instrument, Fair Value, Total 129 294                                                                  
Foreign Exchange Contract, Derivative Asset Not Designated as Hedging Instrument, Fair Value               1 2                                                    
Derivative Asset Not Designated as Hedging Instrument, Fair Value, Total 1 2                                                                  
Derivative Fair Value of Derivative Asset 130 296                                                                  
Foreign Exchange Contract, Derivative Liability Designated as Hedging Instrument, Fair Value                       235 44 64 2                                        
Derivative Liability Designated as Hedging Instrument, Fair Value, Total 299 46                                                                  
Foreign Exchange Contract, Derivative Liability Not Designated as Hedging Instrument, Fair Value                       4 1                                            
Derivative Liability Not Designated as Hedging Instrument, Fair Value, Total 4 1                                                                  
Derivative Fair Value of Derivative Liability 303 47                                                                  
Derivative [Line Items]                                                                      
Interest Rate Swap Inception Date                                 2011-03     2010-03       2010-03       2009-12         2009-06    
Interest Rate Swap Term                               5-year and 10-year fixed-to-floating     five-year fixed-to-floating       three-year fixed-to-floating       five-year fixed-to-floating         five-year fixed-to-floating      
Interest Rate Swap Notional Amount 3,500 4,600                           750     1,850       2,200     1,850     75 75 100     150 150
Derivative Basis Spread on Variable Rate                                         0.36% 1.85% (0.197%)           1.8125% 1.965% 1.981%     1.34% 1.3725%
Derivative, Lower Range of Basis Spread on Variable Rate                               0.37%                                      
Derivative, Higher Range of Basis Spread on Variable Rate                               0.66%                                      
Derivative Fixed Interest Rate                                         3.00% 4.75% 1.625%           4.50% 4.50% 4.50%     4.50% 4.50%
Derivative, Lower Fixed Interest Rate Range                                   2.625%                                  
Derivative, Higher Fixed Interest Rate Range                                   4.125%                                  
Derivative, Cash Received on Hedge                                                 51                    
Accrued Interest Portion                                                   $ 11                  
Number of Interest Rate Swaps                                             nine       three         two      
Number of Interest Rate Swaps                                     12