Commitments and Contingent Liabilities - Schedule of Guarantor Obligations (Details) $ in Thousands	Sep. 30, 2025 USD ($)
Letters of Credit:
Loss Contingencies [Line Items]
Total Amounts Committed	$ 269,788
Less Than 1 Year	238,243
1-3 Years	31,545
3-5 Years	0
Beyond 5 Years	0
Letters of Credit: | Employee-Related
Loss Contingencies [Line Items]
Total Amounts Committed	119,744
Less Than 1 Year	100,091
1-3 Years	19,653
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	149,646
Less Than 1 Year	137,754
1-3 Years	11,892
3-5 Years	0
Beyond 5 Years	0
Surety Bonds:
Loss Contingencies [Line Items]
Total Amounts Committed	968,401
Less Than 1 Year	698,675
1-3 Years	269,726
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Employee-Related
Loss Contingencies [Line Items]
Total Amounts Committed	120,341
Less Than 1 Year	110,891
1-3 Years	9,450
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Environmental
Loss Contingencies [Line Items]
Total Amounts Committed	819,060
Less Than 1 Year	563,502
1-3 Years	255,558
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Other
Loss Contingencies [Line Items]
Total Amounts Committed	29,000
Less Than 1 Year	24,282
1-3 Years	4,718
3-5 Years	0
Beyond 5 Years	$ 0