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2419404 - Disclosure - Income Taxes - Principal Reasons for the Difference Between the Effective Tax Rate and UBT Statutory Tax Rate (Details)
(http://www.abglobal.com/role/IncomeTaxesPrincipalReasonsForDifferenceBetweenEffectiveTaxRateAndUbtStatutoryTaxRateDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001109448 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Income Tax Disclosure [Abstract]
 
 
 
Effective Income Tax Rate Reconciliation, Amount [Abstract]
 
 
 
UBT statutory rate
28,927,000  
25,244,000  
24,345,000  
Corporate subsidiaries’ federal, state, local and foreign income taxes
17,907,000  
31,223,000  
30,353,000  
Effect of ASC 740 adjustments, miscellaneous taxes, and other
(1,070,000) 
2,965,000  
3,393,000  
Income not taxable resulting from use of UBT business apportionment factors
(17,445,000) 
(14,635,000) 
(13,787,000) 
Income tax expense
28,319,000  
 
44,797,000  
 
44,304,000  
 
Effective Income Tax Rate Reconciliation, Percent [Abstract]
 
 
 
UBT statutory rate, percent
4.00%  
4.00%  
4.00%  
Corporate subsidiaries’ federal, state, local and foreign income taxes, percent
2.50%  
4.90%  
5.00%  
Effect of ASC 740 adjustments, miscellaneous taxes, and other, percent
(0.20%) 
0.50%  
0.60%  
Income not taxable resulting from use of UBT business apportionment factors, percent
(2.40%) 
(2.30%) 
(2.30%) 
Effective tax rate, percent
3.90%  
 
7.10%  
 
7.30%