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Network
2415406 - Disclosure - Income Taxes (Summary of Activity Related to Gross Unrecognized Tax Benefits) (Details)
(http://www.google.com/role/IncomeTaxesSummaryOfActivityRelatedToGrossUnrecognizedTaxBenefitsDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Income Tax Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Income Tax Disclosure [Abstract]
 
 
 
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
 
 
 
Beginning Balance
4,167,000,000  
3,294,000,000  
2,502,000,000  
Increases related to prior year tax positions
899,000,000  
224,000,000  
66,000,000  
Decreases related to prior year tax positions
(157,000,000) 
(176,000,000) 
(44,000,000) 
Decreases related to settlement with tax authorities
(196,000,000) 
(27,000,000) 
(1,000,000) 
Increases related to current year tax positions
680,000,000  
852,000,000  
771,000,000  
Ending Balance
5,393,000,000  
 
4,167,000,000  
 
3,294,000,000