Debt and Banking Arrangements Schedule of Long-term Debt Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Debt Instrument Redemption [Table Text Block]

The following table summarizes the face values, maturity dates, semi-annual interest payment dates, and optional redemption periods related to the Company’s outstanding unsecured senior note obligations at December 31, 2019.

Senior Note	Face Value (Millions)		Maturity Date	Interest Payment Dates	Optional Redemption Period(a)
6.000% Senior Notes due 2022 (the “2022 Notes”)	$	73	January 15, 2022	January 15, July 15	October 15, 2021
8.250% Senior Notes due 2023 (the “2023 Notes”)	$	406	August 1, 2023	February 1, August 1	June 1, 2023
5.250% Senior Notes due 2024 (the “2024 Notes”)	$	650	September 15, 2024	March 15, September 15	June 15, 2024
5.750% Senior Notes due 2026 (the “2026 Notes”)	$	500	June 1, 2026	June 1, December 1	June 1, 2021
5.250% Senior Notes due 2027 (the “2027 Notes”)	$	600	October 15, 2027	April 15, October 15	October 15, 2022

 __________

(a) At any time prior to these dates, we have the option to redeem some or all of the notes at a specified “make whole” premium as described in the indenture(s) governing the notes to be redeemed. On or after these dates, we have the option to redeem the notes, in whole or in part, at the applicable redemption prices set forth in the indenture, plus accrued and unpaid interest thereon to the redemption date as more fully described in the indenture.

Schedule of Debt [Table Text Block]

The following table presents a summary of our debt as of the dates indicated below.

	December 31,
	2019		2018
	(Millions)
Credit facility agreement	$	—	$	330
6.000% Senior Notes due 2022	73		529
8.250% Senior Notes due 2023	406		500
5.250% Senior Notes due 2024	650		650
5.750% Senior Notes due 2026	500		500
5.250% Senior Notes due 2027	600		—
Total debt	$	2,229	$	2,509
Less: Current portion of long-term debt	—		—
Total long-term debt	$	2,229	$	2,509
Less: Debt issuance costs(a)	27		24
Total long-term debt, net(a)	$	2,202	$	2,485

__________

(a) Debt issuance costs related to our Credit Facility are recorded in other noncurrent assets on the Consolidated Balance Sheets.