Capital Stock - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended						6 Months Ended	12 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Dec. 31, 2023	May 31, 2024	Jan. 31, 2023
Capital Stock [Line Items]
Authorized amount	$ 900						$ 900		$ 600	$ 300
Stock repurchased during period (in shares)	1,600						3,300
Stock repurchased during period, average price per share (in usd per share)	$ 31.79						$ 29.92
Common stock, dividends, per share, declared (in usd per share)	$ 0.245	$ 0.245	$ 0.225	$ 0.225	$ 0.225	$ 0.225		$ 0.900
Total of 3Q19, 1Q20, and 3Q21 Repurchase Programs
Capital Stock [Line Items]
Stock repurchased during period (in shares)							3,344	5,264
Remaining authorized repurchase amount	$ 667						$ 667