Earnings per Share (Details) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average common shares outstanding - basic	86,000,000	106,000,000
Dilutive effect of employee stock plans	1,000,000	1,000,000
Shares used for diluted earnings per share	86,000,000	107,000,000
Net income per share - basic	$ 5.64	$ 3.02
Net income per share - diluted	$ 5.60	$ 3.00