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173 - Disclosure - Items Accounting for Differences between Income Taxes Computed at Federal Statutory Rate and Provision Recorded for Income Taxes (Detail)
(http://www.amazon.com/taxonomy/role/DisclosureItemsAccountingForDifferencesBetweenIncomeTaxesComputedAtFederalStatutoryRateAndProvisionRecordedForIncomeTaxes)
TableReconciliation of Statutory Federal Tax Rate [Table]
Slicers (applies to each fact value in each table cell)
Reconciliation of Statutory Federal Tax Rate [Line Items]Period [Axis]
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
2010-01-01 - 2010-12-31
Federal statutory rate
.350  
.350  
.350  
Effect of:
 
 
 
Impact of foreign tax differential
.315  
(.084) 
(.127) 
State taxes, net of federal benefits
.002  
.015  
.015  
Tax credits
(.044) 
(.032) 
(.011) 
Nondeductible stock-based compensation
.111  
.041  
.016  
Other, net
.052  
.022  
(.008) 
Total
.786  
 
.312  
 
.235