XML 95 R73.htm IDEA: XBRL DOCUMENT v3.8.0.1
Employee Benefit Plans Schedule of Pension Plan Assets at Fair Value (Detail) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Insurance Contract      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value $ 12 $ 11 $ 10
Recurring      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 75 64  
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 63 53  
Recurring | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 12 11  
Recurring | Money market funds      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 2 1  
Recurring | Money market funds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Money market funds | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 2 1  
Recurring | Money market funds | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Equity funds      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 24 21  
Recurring | Equity funds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Equity funds | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 24 21  
Recurring | Equity funds | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Bond/fixed-income funds      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 31 27  
Recurring | Bond/fixed-income funds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Bond/fixed-income funds | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 31 27  
Recurring | Bond/fixed-income funds | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Real-estate      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 6 4  
Recurring | Real-estate | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Real-estate | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 6 4  
Recurring | Real-estate | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Insurance Contract      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 12 11  
Recurring | Insurance Contract | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Insurance Contract | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Recurring | Insurance Contract | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value $ 12 $ 11