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Insurance Premiums (Unearned Premium Revenue Balance And Future Expected Premium Earnings) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2011
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Twelve months ended, December 31, 2011, Total Expected Future Premium Earnings |
Three months ended, March 31, 2012, Total Expected Future Premium Earnings | 104
Three months ended, June 30, 2012, Total Expected Future Premium Earnings | 101
Three months ended, September 30, 2012, Total Expected Future Premium Earnings | 97
Three months ended, December 31, 2012, Total Expected Future Premium Earnings | 92
Twelve months ended, December 31, 2013, Total Expected Future Premium Earnings | 353
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 322
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 296
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 271
Five years ended, December 31, 2021, Total Expected Future Premium Earnings | 1,030
Five years ended, December 31, 2026, Total Expected Future Premium Earnings | 627
Five years ended, December 31, 2031 and thereafter, Total Expected Future | 596
Total Expected Future Premium Earnings | 3,889
Unearned Premium Revenue [Member] |
Twelve months ended, December 31, 2011, Total Expected Future Premium Earnings | 3,515
Three months ended, March 31, 2012, Total Expected Future Premium Earnings | 3,420
Three months ended, June 30, 2012, Total Expected Future Premium Earnings | 3,328
Three months ended, September 30, 2012, Total Expected Future Premium Earnings | 3,240
Three months ended, December 31, 2012, Total Expected Future Premium Earnings | 3,156
Twelve months ended, December 31, 2013, Total Expected Future Premium Earnings | 2,835
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 2,543
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 2,275
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 2,030
Five years ended, December 31, 2021, Total Expected Future Premium Earnings | 1,099
Five years ended, December 31, 2026, Total Expected Future Premium Earnings | 533
Five years ended, December 31, 2031 and thereafter, Total Expected Future |
Upfront [Member] |
Twelve months ended, December 31, 2011, Total Expected Future Premium Earnings |
Three months ended, March 31, 2012, Total Expected Future Premium Earnings | 55
Three months ended, June 30, 2012, Total Expected Future Premium Earnings | 54
Three months ended, September 30, 2012, Total Expected Future Premium Earnings | 53
Three months ended, December 31, 2012, Total Expected Future Premium Earnings | 51
Twelve months ended, December 31, 2013, Total Expected Future Premium Earnings | 195
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 180
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 165
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 150
Five years ended, December 31, 2021, Total Expected Future Premium Earnings | 581
Five years ended, December 31, 2026, Total Expected Future Premium Earnings | 346
Five years ended, December 31, 2031 and thereafter, Total Expected Future | 296
Total Expected Future Premium Earnings | 2,126
Installments [Member] |
Twelve months ended, December 31, 2011, Total Expected Future Premium Earnings |
Three months ended, March 31, 2012, Total Expected Future Premium Earnings | 40
Three months ended, June 30, 2012, Total Expected Future Premium Earnings | 38
Three months ended, September 30, 2012, Total Expected Future Premium Earnings | 35
Three months ended, December 31, 2012, Total Expected Future Premium Earnings | 33
Twelve months ended, December 31, 2013, Total Expected Future Premium Earnings | 126
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 112
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 103
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 95
Five years ended, December 31, 2021, Total Expected Future Premium Earnings | 350
Five years ended, December 31, 2026, Total Expected Future Premium Earnings | 220
Five years ended, December 31, 2031 and thereafter, Total Expected Future | 237
Total Expected Future Premium Earnings | 1,389
Accretion [Member] |
Twelve months ended, December 31, 2011, Total Expected Future Premium Earnings |
Three months ended, March 31, 2012, Total Expected Future Premium Earnings | 9
Three months ended, June 30, 2012, Total Expected Future Premium Earnings | 9
Three months ended, September 30, 2012, Total Expected Future Premium Earnings | 9
Three months ended, December 31, 2012, Total Expected Future Premium Earnings | 8
Twelve months ended, December 31, 2013, Total Expected Future Premium Earnings | 32
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 30
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 28
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 26
Five years ended, December 31, 2021, Total Expected Future Premium Earnings | 99
Five years ended, December 31, 2026, Total Expected Future Premium Earnings | 61
Five years ended, December 31, 2031 and thereafter, Total Expected Future | 63
Total Expected Future Premium Earnings | $ 374

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- Definition For financial guarantee insurance contracts, the amount of premium revenue expected to be recognized during the second year following the statement of financial position reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 163 -Paragraph 30 -Subparagraph e(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6933581&loc=SL5749298-161291 + Details
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