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Commitments and Contingent Liabilities - Unrecorded Unconditional Purchase Obligation (Details) - Purchase Commitment
$ in Thousands
Mar. 31, 2020
USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]  
Less than 1 year $ 249,924
1 - 3 years 475,567
3 - 5 years 398,180
More than 5 years 1,033,218
Total Purchase Obligations $ 2,156,889