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Guarantees (Details 2)
Mar. 31, 2023
USD ($)
Guarantor Obligations [Line Items]  
Guarantor obligations, maximum exposure, undiscounted $ 350,000,000
Fixed maximum amounts guaranteed by year 2023 28,300,000
Fixed maximum amounts guaranteed by year 2024 144,100,000
Fixed maximum amounts guaranteed by year 2025 163,300,000
Fixed maximum amounts guaranteed by year 2026 1,500,000
Fixed maximum amounts guaranteed by year 2027 1,000,000
Fixed maximum amounts guaranteed, thereafter 300,000
No scheduled maturity date 11,500,000
Amount outstanding under guarantees that is reflected on balance sheet 0
Letters of credit 26,000,000
Letters of credit set to expire - 2023 25,600,000
Letters of credit set to expire - 2024 400,000
Outstanding letters of credit 0
Amount of surety bonds outstanding $ 1,600,000,000