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Financial Statement Schedule
 12 Months Ended
Dec. 31, 2011
Financial Statement Schedule [Abstract]  
Schedule of Valuation and Qualifying Accounts
 
Balance at Beginning of Period
 
Charged/Credited to Net Income
 
Charged to Other Account
 
Charges Utilized/Write-offs
 
Balance at End of Period
 
(In millions)
Allowances for Doubtful Accounts and Authorized Credits
 
 
 
 
 
 
 
 
 
Year ended December 31, 2010
$
103

 
$
65

 
$
—

 
$
(82
)
 
$
86

Year Ended December 31, 2011
86

 
135

 
—

 
(134
)
 
87

Year Ended December 31, 2012
$
87

 
$
177

 
$
—

 
$
(175
)
 
$
89

 
 
 
 
 
 
 
 
 
 
Allowance for Transaction, Loan and Interest Losses
 
 
 
 
 
 
 
 
 
Year ended December 31, 2010
$
148

 
$
360

 
$
—

 
$
(371
)
 
$
137

Year Ended December 31, 2011
137

 
482

 
—

 
(426
)
 
193

Year Ended December 31, 2012
$
193

 
$
573

 
$
—

 
$
(538
)
 
$
228

 
 
 
 
 
 
 
 
 
 
Tax Valuation Allowance
 
 
 
 
 
 
 
 
 
Year ended December 31, 2010
$
69

 
$
1

 
$
—

 
$
(27
)
 
$
43

Year Ended December 31, 2011
43

 
33

 
—

 
7

 
83

Year Ended December 31, 2012
$
83

 
$
16

 
$
78

 
$
(8
)
 
$
169