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Earnings per Share (Details) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average common shares outstanding - basic	106,000,000	112,000,000
Dilutive effect of employee stock plans	1,000,000	1,000,000
Shares used for diluted earnings per share	107,000,000	113,000,000
Net income per share - basic	$ 3.02	$ 0.29
Net income per share - diluted	$ 3.00	$ 0.29

X

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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