v2.4.0.6
Income Taxes (Reconciliation of the Provision for (Benefit from) Income Taxes and the U.S. Federal Statutory Income Tax Rate) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Remeasurement of Reserves and Related Interest Associated with Either Expiration of Applicable Statute of Limitations or New Information Regarding Status of Certain Internal Revenue Service Examinations
Dec. 31, 2012
Overstatement (Understatement) of Deferred Tax Assets, Out-of-period
Dec. 31, 2012
Overstatement (Understatement) of Deferred Tax Assets, Out-of-period
Dec. 31, 2011
Remeasurement of Deferred Tax Asset and Reversal of Related Valuation Allowance
Dec. 31, 2011
Reversal of U.S. Deferred Tax Liabilities Associated with Prior Periods' Undistributed Earnings of Certain Non-U.S. Subsidiaries That Were Determined to Be Indefinitely Reinvested Abroad
Dec. 31, 2010
Reversal of U.S. Deferred Tax Liabilities Associated with Prior Periods' Undistributed Earnings of Certain Non-U.S. Subsidiaries That Were Determined to Be Indefinitely Reinvested Abroad
Dec. 31, 2010
Remeasurement of Net Unrecognized Tax Benefits and Related Interest Based on New Information Regarding Status of Income Tax Examinations
Dec. 31, 2010
Planned Repatriation of Non-U.S. Earnings at Cost Lower Than Originally Estimated
Dec. 31, 2010
Revel
Dec. 31, 2011
Japan
Remeasurement of Foreign Deferred Tax Assets Due to Decrease in Foreign Statutory Income Tax Rates
Effective Income Tax Rate Reconciliation, Percent                          
U.S. federal statutory income tax rate 35.00% [1] 35.00% 35.00%                    
U.S. state and local income taxes, net of U.S. federal income tax benefits 9.50% [1] 2.60% 6.30%                    
Domestic tax credits (43.10%) [1] (3.90%) (3.70%)                    
Tax exempt income (30.10%) [1] (0.30%) (1.80%)                    
Non-U.S. earnings                          
Foreign Tax Rate Differential (14.00%) [1] 0.70% (13.60%)                    
Change in Reinvestment Assertion 4.80% [1] (2.20%) (6.10%)                    
Change in Foreign Tax Rates (0.30%) [1] 1.60% 0.00%                    
Valuation allowance 0.00% [1] (7.30%) 0.00%                    
Other (8.20%) [1] (3.10%) (4.10%)                    
Effective income tax rate (46.40%) [1] 23.10% 12.00%                    
Income Tax Expense (Benefit)                          
Discrete income tax expense (benefit)         $ 75   $ (447) $ (137) $ (382) $ (345) $ (277)   $ 100
Discrete income tax expense (benefit), after adjustments (142)     (299)   (157)              
Loss in connection with disposition of business $ 0 $ 0 $ 1,190                 $ 1,190  
Effective income tax rate excluding effect of discrete tax expense (benefit) 18.80% 31.00% 27.50%                    
[1] 2012 percentages are reflective of the lower level of income from continuing operations before income taxes on a comparative basis due to the change in the fair value of certain of the Company’s long-term and short-term borrowings resulting from fluctuations in its credit spreads and other credit factors.