Commitments and Contingent Liabilities - Guarantor Obligations (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Letters of Credit:
Loss Contingencies [Line Items]
Total Amounts Committed	$ 183,259
Less Than 1 Year	173,623
1-3 Years	9,636
3-5 Years	0
Beyond 5 Years	0
Letters of Credit: | Employee-Related
Loss Contingencies [Line Items]
Total Amounts Committed	48,020
Less Than 1 Year	43,420
1-3 Years	4,600
3-5 Years	0
Beyond 5 Years	0
Letters of Credit: | Environmental
Loss Contingencies [Line Items]
Total Amounts Committed	398
Less Than 1 Year	398
1-3 Years	0
3-5 Years	0
Beyond 5 Years	0
Letters of Credit: | Other
Loss Contingencies [Line Items]
Total Amounts Committed	134,841
Less Than 1 Year	129,805
1-3 Years	5,036
3-5 Years	0
Beyond 5 Years	0
Surety Bonds:
Loss Contingencies [Line Items]
Total Amounts Committed	611,374
Less Than 1 Year	611,374
1-3 Years	0
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Employee-Related
Loss Contingencies [Line Items]
Total Amounts Committed	80,210
Less Than 1 Year	80,210
1-3 Years	0
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Environmental
Loss Contingencies [Line Items]
Total Amounts Committed	527,064
Less Than 1 Year	527,064
1-3 Years	0
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Other
Loss Contingencies [Line Items]
Total Amounts Committed	4,100
Less Than 1 Year	4,100
1-3 Years	0
3-5 Years	0
Beyond 5 Years	$ 0