XML 93 R75.htm IDEA: XBRL DOCUMENT v3.19.2
Pension and Other Postretirement Benefits (Textual) (Details)
$ in Millions
Apr. 30, 2019
USD ($)
Pension Benefits [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Expected contribution to benefit plans in 2020 $ 21
Estimated amount of prior service cost that will be amortized from accumulated other comprehensive loss into pension expense in 2020 (1)
Estimated amount of net actuarial loss that will be amortized from accumulated other comprehensive loss into pension expense in 2020 19
Medical and Life Insurance Benefits [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Expected contribution to benefit plans in 2020 4
Estimated amount of prior service cost that will be amortized from accumulated other comprehensive loss into pension expense in 2020 3
Estimated amount of net actuarial loss that will be amortized from accumulated other comprehensive loss into pension expense in 2020 $ 1