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Component: (Network and Table)
Network
2428403 - Disclosure - Fair Value Measurement - Changes in Level 3 Instruments (Details)
(http://www.synchronyfinancial.com/role/FairValueMeasurementChangesInLevel3InstrumentsDetails)
TableFair Value Measurements, Recurring and Nonrecurring [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001601712 (http://www.sec.gov/CIK)
Fair Value, Hierarchy [Axis]Level 3
Measurement Frequency [Axis]Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
 
 
Balance at beginning of period
49,000,000  
60,000,000  
Net realized and unrealized gains (losses)
1,000,000  
1,000,000  
Purchases
0  
0  
Sales
0  
(6,000,000) 
Settlements
(4,000,000) 
(6,000,000) 
Balance at end of period
46,000,000  
 
49,000,000  
 
Net change in unrealized gains (losses) relating to instruments still held at December 31
1,000,000  
1,000,000