XML 159 R114.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Pension And Other Retirement Benefits - Estimated Future Benefits Payments for Retirement Plans (Detail) - U.S. Plans
$ in Millions
Dec. 31, 2019
USD ($)
Pension Plans  
Defined Benefit Plan Disclosure [Line Items]  
2020 $ 16
2021 17
2022 47
2023 27
2024 23
2025 - 2029 146
Other Retirement Plans  
Defined Benefit Plan Disclosure [Line Items]  
2020 1
2021 1
2022 1
2023 2
2024 2
2025 - 2029 $ 12