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Equity Equity (Policies)	9 Months Ended
Equity Equity (Policies)	Sep. 30, 2019
Equity [Abstract]
Stock Repurchase Policy [Policy Text Block]	Stock Repurchases The Company may repurchase shares of its common stock under authorizations from its Board of Directors. Shares repurchased are retired and not displayed separately as treasury stock on the consolidated financial statements. The par value of the shares repurchased and retired is deducted from common stock and the excess of the purchase price over par value is first charged against any available additional paid-in capital with the balance charged to retained earnings. Direct costs incurred to repurchase the shares are included in the total cost of the shares. The Company's Board of Directors authorized a share repurchase program of up to $275 million, $300 million, $350 million and $175 million of the Company's common stock in February 2016, 2017, 2018 and 2019, respectively. In the first quarter of 2019, the Company repurchased and retired 1.2 million shares of common stock for $20 million at a weighted average market price of $17.21 per share. The Company did not repurchase any shares under the share repurchase programs during the second and third quarters of 2019. As of September 30, 2019, the Company had repurchased and retired 35.5 million shares of common stock for an aggregate of $896 million at a total weighted average market price of $25.22 per share. As of September 30, 2019, $204 million remained available for repurchase under the share repurchase programs.