XML 43 R33.htm IDEA: XBRL DOCUMENT v3.10.0.1
Reclassifications of Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net (loss) gain on securities $ (41)   $ (810) $ 28,915
Income tax expense (30,022) $ (67,984) (104,398) (193,628)
Net (Loss) income $ 106,772 $ 110,468 320,678 $ 329,680
Reclassifications, net of tax [1]     (3,822)  
Past service liability        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Reclassifications, before tax [1],[2]     186  
Actuarial losses        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Reclassifications, before tax [1],[2]     (5,615)  
Amortization of defined benefit pension        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Reclassifications, before tax [1]     (5,429)  
Tax benefit [1]     1,607  
Reclassifications, net of tax [1]     (3,822)  
Reclassification out of Accumulated Other Comprehensive Income (loss) | Unrealized gains on available for sale securities        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net (loss) gain on securities [1]     0  
Income tax expense [1]     0  
Net (Loss) income [1]     $ 0  
[1] Amounts in parentheses indicate expense items.
[2] See Note 8, "Pension and Other Post-Retirement Benefits," for additional information.