Consolidated Balance Sheets (Parenthetical) $ in Millions	Dec. 31, 2021 USD ($) $ / shares shares
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable | $	$ 2
Common Stock, Par or Stated Value Per Share | $ / shares	$ 1
Common Stock, Shares Authorized	200,000,000
Common Stock, Shares, Issued	102,415,883
Common Stock, Shares, Outstanding	85,636,154
Preferred Stock, Par or Stated Value Per Share | $ / shares	$ 1
Preferred Stock, Shares Authorized	15,000,000
Treasury Stock, Shares	16,779,729