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Note 19. Subsequent Events Subsequent Events (Notes)
12 Months Ended
Dec. 31, 2018
Subsequent Events [Abstract]  
Subsequent Events [Text Block]
SUBSEQUENT EVENTS
Redemption of $450 million of 4.50% Senior Notes
On February 15, 2019, the Company redeemed all of its outstanding $450 million 4.50% Senior Notes due in April 2019. The Company utilized borrowings under its Revolving Credit Facility to redeem the 4.50% Senior Notes and plans to refinance on a long-term basis all or a portion of the funds used to redeem the 4.50% Senior Notes, subject to market conditions.