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Employee Benefit Plans - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Dec. 31, 2018
Jun. 30, 2019
Foreign Pension Plans, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Actual contributions to benefit plans in period   $ 3,000,000
Estimated future contributions in current fiscal year   2,000,000
Remeasurement due to curtailment gain $ 18,000,000  
United States Pension Plans of US Entity, Defined Benefit [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Actual contributions to benefit plans in period   $ 1