Earnings Per Share (Schedule of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income		$ 28	$ 76	$ 63	$ 122
Weighted-average common shares outstanding		81.5	85.5	82.0	85.5
Weighted-average common shares outstanding - assuming dilution		81.6	85.9	82.1	85.9
Basic earnings per share (in dollars per share)		$ 0.34	$ 0.89	$ 0.77	$ 1.42
Diluted earnings per share (in dollars per share)		$ 0.34	$ 0.89	$ 0.77	$ 1.42
RSU [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive securities	[1]	0.2	0.2	0.1	0.2
Antidilutive securities excluded from computation of diluted earnings per share (in shares)		0.8	0.3	1.0	0.3
Stock Options [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive securities	[2]		0.2		0.2
Antidilutive securities excluded from computation of diluted earnings per share (in shares)		1.6	0.7	1.4	0.6

[1] RSUs of 0.8 million and 0.3 million shares for the three months ended September 30, 2022 and 2021, respectively, and 1.0 million and 0.3 million shares for the nine months ended September 30, 2022 and 2021, respectively, were not included in the diluted earnings per share calculation because their effect would have been anti-dilutive.

[2] Options to purchase 1.6 million and 0.7 million shares for the three months ended September 30, 2022 and 2021, respectively, and 1.4 million and 0.6 million shares for the nine months ended September 30, 2022 and 2021, respectively, were not included in the diluted earnings per share calculation because their effect would have been anti-dilutive.