Commitments and Contingent Liabilities - Guarantor Obligations (Details) $ in Thousands	Dec. 31, 2025 USD ($)
Letters of Credit:
Loss Contingencies [Line Items]
Total Amounts Committed	$ 268,380
Less Than 1 Year	239,586
1-3 Years	28,794
3-5 Years	0
Beyond 5 Years	0
Letters of Credit: | Employee-Related
Loss Contingencies [Line Items]
Total Amounts Committed	121,970
Less Than 1 Year	98,666
1-3 Years	23,304
3-5 Years	0
Beyond 5 Years	0
Letters of Credit: | Environmental
Loss Contingencies [Line Items]
Total Amounts Committed	398
Less Than 1 Year	0
1-3 Years	398
3-5 Years	0
Beyond 5 Years	0
Letters of Credit: | Other
Loss Contingencies [Line Items]
Total Amounts Committed	146,012
Less Than 1 Year	140,920
1-3 Years	5,092
3-5 Years	0
Beyond 5 Years	0
Surety Bonds:
Loss Contingencies [Line Items]
Total Amounts Committed	1,072,029
Less Than 1 Year	1,007,808
1-3 Years	64,221
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Employee-Related
Loss Contingencies [Line Items]
Total Amounts Committed	116,978
Less Than 1 Year	115,678
1-3 Years	1,300
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Environmental
Loss Contingencies [Line Items]
Total Amounts Committed	859,358
Less Than 1 Year	796,684
1-3 Years	62,674
3-5 Years	0
Beyond 5 Years	0
Surety Bonds: | Other
Loss Contingencies [Line Items]
Total Amounts Committed	95,693
Less Than 1 Year	95,446
1-3 Years	247
3-5 Years	0
Beyond 5 Years	$ 0