Condensed Consolidated Statements Of Income (Parenthetical) - shares shares in Millions		3 Months Ended	9 Months Ended	12 Months Ended
		Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2023
Common stock dividend declared, percent				20.00%
Average common shares outstanding	[1]	32.1	32.2
Previously Reported [Member]
Average common shares outstanding		26.7	26.8

[1] Adjusted for the declaration of a 20% stock dividend in 2023, shares related to which were issued in February 2024. Prior to the adjustment, the average common shares outstanding were 26.7 million and 26.8 million for the three and nine months ended September 30, 2023.