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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Summary of Share-Based Compensation Expense Income Tax Benefit Awards Issued Under Incentive Plans
Stock-based compensation expense of awards issued under the Company’s incentive plans, and the income tax benefit of awards vested and exercised, are as follows:
Three Months Ended 
June 30,		Six Months Ended 
June 30,
(In millions)2024202320242023
Restricted stock units - employees and non-employee directors$12 $7 $21 $14 
Restricted stock awards2 4 3 8 
Performance share awards2 3 5 8 
Deferred performance shares— (7)— (7)
   Total stock-based compensation expense$16 $7 $29 $23 
Income tax benefit$— $1 $— $2 
Assumptions to Determine the Grant Date Fair Value of the Equity Component and the Period-end Fair Value of the Liability
The following assumptions were used to determine the grant date fair value of the equity component and the period-end fair value of the liability component of the TSR Performance Share Awards:
 Grant Date
February 21, 2024June 30, 2024
Fair value per performance share award$19.38 
$3.18 - $9.67
Assumptions:  
Stock price volatility38.0 %
22.1%- 36.2%
Risk-free rate of return4.39 %
4.55% - 5.22%