Equity Items - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended		3 Months Ended							9 Months Ended
	May 25, 2022	Apr. 08, 2022	Feb. 28, 2022	Sep. 30, 2021	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2022	Mar. 01, 2022
Accelerated Share Repurchases [Line Items]
Common shares repurchased					449,932							2,853,312
Common stock, dividends, per share, declared	$ 0.335
Common stock dividends per share cash paid increase	12.00%
Dividend per common share						$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.275	$ 0.275
2022 Stock Repurchase Program [Member]
Accelerated Share Repurchases [Line Items]
Stock repurchase during period value	$ 500
Aggregate amount of common stock to be repurchased	1,000
Stock repurchase program amount outstanding	$ 150
2018 Stock Repurchase Program [Member]
Accelerated Share Repurchases [Line Items]
Aggregate amount of common stock to be repurchased													$ 200
Stock repurchased and retired during period shares		2,150,000
Stock repurchased and retired during period value		$ 200
2021 Accelerated Share Repurchase Agreement [Member]
Accelerated Share Repurchases [Line Items]
Stock repurchase during period value				$ 450
Stock repurchased and retired during period shares				3,900,000								4,600,000
Common shares repurchased			700,000