XML 21 R88.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Income Taxes - Difference Between Effective Tax Rate (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Federal income tax at U.S. statutory rate $ (1,357) $ 9 $ (137)
Foreign income tax rate differential (40) (3) (21)
Goodwill impairment 666    
Nondeductible expenses 61 20 38
Foreign dividends, net of foreign tax credits 163 27 (132)
Tax rate change on timing differences 1 (7) (245)
Change in uncertain tax positions (60) (5) 81
Prior years taxes 3 (13) (26)
Tax impact on foreign exchange (2) (3) 5
Change in deferred tax valuation allowance 218 49 280
State income taxes - net of federal benefit (16) (3) (1)
Tax exempt income (6) (5)  
Income tax credits   (3) (4)
Other     6
Total income tax provision $ (369) $ 63 $ (156)