XML 109 R88.htm IDEA: XBRL DOCUMENT v3.6.0.2
Pension and Other Postretirement Benefit Plans (Fair Value of Plan Assets by Category) (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Significant unobservable inputs (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 132 $ 156
Fair Value, Measurements, Recurring | Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 3,174 3,293
Net asset value of plan assets 746 778
Fair Value, Measurements, Recurring | Pension Plan | Cash and cash equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 47 26
Fair Value, Measurements, Recurring | Pension Plan | U.S. securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 455 494
Fair Value, Measurements, Recurring | Pension Plan | International securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 163 212
Fair Value, Measurements, Recurring | Pension Plan | Domestic Corporate Debt Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 892 909
Fair Value, Measurements, Recurring | Pension Plan | Foreign Corporate Debt Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 190 160
Fair Value, Measurements, Recurring | Pension Plan | U.S. Equity Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 14 13
Fair Value, Measurements, Recurring | Pension Plan | Foreign Equity Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 454 472
Fair Value, Measurements, Recurring | Pension Plan | Mutual funds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 64 59
Fair Value, Measurements, Recurring | Pension Plan | Common and Collective Funds, U.S. equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Net asset value of plan assets 650 648
Fair Value, Measurements, Recurring | Pension Plan | Common and Collective Funds, International equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Net asset value of plan assets 56 65
Fair Value, Measurements, Recurring | Pension Plan | Common and Collective Funds, Short-term investment fund    
Defined Benefit Plan Disclosure [Line Items]    
Net asset value of plan assets 30 55
Fair Value, Measurements, Recurring | Pension Plan | U.S. private equity investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 104 120
Fair Value, Measurements, Recurring | Pension Plan | Diversified fund of funds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 14 21
Fair Value, Measurements, Recurring | Pension Plan | Emerging growth    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 14 15
Fair Value, Measurements, Recurring | Pension Plan | Real estate    
Defined Benefit Plan Disclosure [Line Items]    
Net asset value of plan assets 10 10
Fair Value, Measurements, Recurring | Pension Plan | All other investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 17 14
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 579 570
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | Cash and cash equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 47 26
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | U.S. securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | International securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | Domestic Corporate Debt Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | Foreign Corporate Debt Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | U.S. Equity Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 14 13
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | Foreign Equity Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 454 472
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | Mutual funds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 64 59
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | U.S. private equity investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | Diversified fund of funds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | Emerging growth    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Quoted prices (Level 1) | All other investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 1,717 1,789
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | Cash and cash equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | U.S. securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 455 494
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | International securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 163 212
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | Domestic Corporate Debt Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 892 909
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | Foreign Corporate Debt Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 190 160
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | U.S. Equity Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | Foreign Equity Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | Mutual funds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | U.S. private equity investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | Diversified fund of funds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | Emerging growth    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Other significant observable inputs (Level 2) | All other investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 17 14
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3)    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 132 156
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | Cash and cash equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | U.S. securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | International securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | Domestic Corporate Debt Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | Foreign Corporate Debt Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | U.S. Equity Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | Foreign Equity Securities    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | Mutual funds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | U.S. private equity investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 104 120
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | Diversified fund of funds    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 14 21
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | Emerging growth    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 14 15
Fair Value, Measurements, Recurring | Pension Plan | Significant unobservable inputs (Level 3) | All other investments    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 0 $ 0