Capital Stock (Tables)

12 Months Ended

Dec. 31, 2024

Stockholders' Equity Note [Abstract]

Schedule of Common Stock Outstanding

Common stock outstanding as of December 31, 2024, 2023 and 2022 was as follows:

(Number of shares in millions)	2024		2023		2022
Common stock:
Balance, beginning of year	110.8		110.4		110.1
Activity under stock plans		0.8		0.4		0.3
Balance, end of year	111.6		110.8		110.4
Treasury stock:
Balance, beginning of year	26.7		26.2		26.1
Repurchased		3.9		0.5		0.1
Balance, end of year	30.6		26.7		26.2
Common stock outstanding		81.0		84.1		84.2