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Earnings Per Share and Shareholders' Equity Transactions (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	May 13, 2026
Class Of Stock [Line Items]
Percentage of excise tax imposed on common stock repurchase activity			1.00%
Stock available for additional repurchases	$ 581,000,000		$ 581,000,000
Open Market Purchases [Member]
Class Of Stock [Line Items]
Repurchased common shares			1,200,000
Repurchased common shares value			$ 230,000,000
Prior Stock Repurchase Program [Member]
Class Of Stock [Line Items]
Repurchased common shares			600,000
New Stock Repurchase Program [Member]
Class Of Stock [Line Items]
Repurchased common shares			600,000
Maximum [Member] \| New Stock Repurchase Program [Member]
Class Of Stock [Line Items]
Repurchases common stock, authorized					$ 700,000,000
Stock Compensation Plans [Member]
Class Of Stock [Line Items]
Antidilutive securities excluded from calculation of earnings per share	0	100,000	100,000	100,000