Annual report pursuant to Section 13 and 15(d)

Income Taxes - Effective Income Tax Rate, Tax Rate Reconciliation (Details)

v3.6.0.2
Income Taxes - Effective Income Tax Rate, Tax Rate Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]      
Computed expected tax benefit (expense) $ (497) $ (160) $ (161)
Liquidation of consolidated subsidiaries     107
Dividends received deductions 11 2 99
Taxable dividends not recognized for book purposes (11)    
Sale of subsidiary shares to subsidiary treated as a dividend for tax     (123)
State and local income taxes, net of federal income taxes (46) (1) (4)
Federal tax credits 67    
Change in valuation allowance affecting tax expense (1) (44) (2)
Recognition of tax benefits not previously recognized, net     11
Other, net (18) (7) 7
Income tax (expense) benefit $ (495) $ (210) $ (66)