Commitments and Contingent Liabilities - Guarantor Obligations (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Letters of Credit:
Loss Contingencies [Line Items]
Total Amounts Committed	$ 181,202
Less Than 1 Year	148,002
1-3 Years	33,200
3-5 Years	0
Beyond 5 Years	0
Letters of Credit: | Employee-Related
Loss Contingencies [Line Items]
Total Amounts Committed	48,034
Less Than 1 Year	29,649
1-3 Years	18,385
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	132,770
Less Than 1 Year	117,955
1-3 Years	14,815
3-5 Years	0
Beyond 5 Years	0
Surety Bonds:
Loss Contingencies [Line Items]
Total Amounts Committed	606,857
Less Than 1 Year	552,314
1-3 Years	54,543
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Employee-Related
Loss Contingencies [Line Items]
Total Amounts Committed	81,010
Less Than 1 Year	47,760
1-3 Years	33,250
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Environmental
Loss Contingencies [Line Items]
Total Amounts Committed	521,999
Less Than 1 Year	500,911
1-3 Years	21,088
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Other
Loss Contingencies [Line Items]
Total Amounts Committed	3,848
Less Than 1 Year	3,643
1-3 Years	205
3-5 Years	0
Beyond 5 Years	$ 0