Stock Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Stock-based Compensation Expense

Stock-based compensation expense for the following periods were:

In millions	Three months ended June 30				Six months ended June 30
	2023		2022		2023		2022
Restricted stock units	$	34	$	28	$	62	$	54
Stock options	—		5		2		10
Employee stock purchase plan	2		2		4		5
Stock-based compensation expense	36		35		68		69
Tax benefit	(4)		(4)		(4)		(8)
Stock-based compensation expense (net of tax)	$	32	$	31	$	64	$	61

Schedule of Valuation Assumptions Used To Estimate Fair Value of Stock Options

The table below details the significant assumptions used in determining the fair value of the market-based restricted stock units granted on February 13, 2023:

Dividend yield	—	%
Risk-free interest rate	4.15	%
Expected volatility	55.90	%