Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 1	$ 1
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares, Issued	93,546,332	102,415,883
Common Stock, Shares, Outstanding	77,241,859	85,636,154
Treasury Stock, Shares	16,304,473	16,779,729