XML 114 R70.htm IDEA: XBRL DOCUMENT v3.19.3
Pensions and Other Benefits - Net Periodic Benefit Costs (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Settlement, termination and curtailment losses (a) $ 3 $ 10 $ 3 $ 10
Pension Benefits        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 11 12 33 37
Interest cost 59 58 178 174
Expected return on plan assets (81) (90) (243) (270)
Amortization of prior service cost 0 0 1 0
Amortization of actuarial net loss 33 38 99 114
Net periodic benefit cost, excluding below 22 18 68 55
Multiemployer plans 20 16 57 45
Settlement, termination and curtailment losses (a) 3 10 3 10
Net periodic benefit cost 45 44 128 110
Other Benefits        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost 4 4 10 12
Interest cost 22 23 68 69
Expected return on plan assets (19) (20) (59) (61)
Amortization of prior service cost 8 7 22 22
Amortization of actuarial net loss 0 1 2 3
Net periodic benefit cost, excluding below 15 15 43 45
Multiemployer plans 0 0 0 0
Settlement, termination and curtailment losses (a) 0 0 0 0
Net periodic benefit cost $ 15 $ 15 $ 43 $ 45