Long-Term Debt And Commercial Paper (Narrative) (Details) - USD ($)	1 Months Ended	9 Months Ended	12 Months Ended
	Oct. 31, 2025	Sep. 30, 2025	Dec. 31, 2024	Feb. 24, 2025
Debt Instrument [Line Items]
Letters of credit, amount outstanding		$ 400,000
Commercial paper, maximum aggregate amount outstanding permitted		1,900,000,000
Commercial paper, amount outstanding		$ 200,000,000.0	$ 630,000,000.0
Commercial Paper
Debt Instrument [Line Items]
Weighted-average annual interest rate		4.60%	4.90%
Maximum | Commercial Paper
Debt Instrument [Line Items]
Maturity period of debt		397 days
Weighted Average | Commercial Paper
Debt Instrument [Line Items]
Maturity period of debt		1 day	9 days
Revolving Credit Facility Due 2028
Debt Instrument [Line Items]
Maximum borrowing capacity under revolving credit facility		$ 1,900,000,000
Additional borrowing capacity under accordion feature of revolving credit facility		500,000,000.0
Revolving credit facilities letter of credit sublimit		200,000,000.0
Remaining borrowing capacity		$ 1,900,000,000
Revolving Credit Facility Due 2028 | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Credit spread adjustment on SOFR borrowings under our revolving credit facility		0.10%
Revolving Credit Facility Due 2028 | Minimum
Debt Instrument [Line Items]
Commitment fee on undrawn amounts (percent)		0.125%
Revolving Credit Facility Due 2028 | Maximum
Debt Instrument [Line Items]
Commitment fee on undrawn amounts (percent)		0.20%
Senior Notes | 4.5% Senior Notes
Debt Instrument [Line Items]
Percentage interest		4.50%
Line of Credit | Revolving Credit Facility Due 2028 | Minimum | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable interest rates (percent)		1.125%
Line of Credit | Revolving Credit Facility Due 2028 | Minimum | Base Rate
Debt Instrument [Line Items]
Basis spread on variable interest rates (percent)		0.125%
Line of Credit | Revolving Credit Facility Due 2028 | Maximum | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable interest rates (percent)		1.50%
Line of Credit | Revolving Credit Facility Due 2028 | Maximum | Base Rate
Debt Instrument [Line Items]
Basis spread on variable interest rates (percent)		0.50%
Recourse | Revolving Credit Facility Due 2028
Debt Instrument [Line Items]
Revolving credit facility, amount outstanding		$ 0	$ 0
Recourse | Other Debt
Debt Instrument [Line Items]
Finance leases and other debt obligations included in long-term debt		$ 353,100,000	$ 350,000,000.0
Recourse | Senior Notes | 5.89% Senior Notes
Debt Instrument [Line Items]
Initial principal amount				$ 500,000,000.0
Percentage interest		5.89%
Senior notes, aggregate offering price percentage				99.995%
Maturity Date		Mar. 15, 2035
Recourse | Senior Notes | 4.5% Senior Notes
Debt Instrument [Line Items]
Percentage interest		4.50%
Maturity Date		Oct. 01, 2025
Recourse | Senior Notes | 4.5% Senior Notes | Subsequent Event
Debt Instrument [Line Items]
Repayment of senior notes	$ 450,000,000.0
Recourse | Line of Credit | Revolving Credit Facility Due 2028
Debt Instrument [Line Items]
Maturity Date		Jul. 18, 2028