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Note 6 - Capital Stock	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	6. Capital Stock On April 20, 2017, our Board of Directors authorized the purchase of $500 million of our common stock. At September 30, 2019, $145 million of this authorization was remaining. We purchased approximately 380,000 shares, or $36 million, of our common stock under our repurchase authorization during the three months ended September 30, 2019 and approximately 2.4 million shares, or $226 million, of our common stock under our repurchase authorization during the nine months ended September 30, 2019. On July 18, 2019, our Board of Directors declared a regular quarterly cash dividend of $0.26, which was paid August 16, 2019, to stockholders of record on August 2, 2019. On October 14, 2019, our Board of Directors declared a regular quarterly dividend of $0.26 per common share, which will be paid on November 22, 2019, to stockholders of record on November 8, 2019.

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The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

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