Detail supporting the computation of basic and diluted earnings per common share was as follows for the three months ended March 31, 2024 and 2023:


	Three Months Ended March 31,
		2024		2023
		(dollars in millions, except per common share results; number of shares in thousands)
Net income available for common stockholders		$	741	$	1,239
Weighted average outstanding shares of common stock used to compute basic earnings per common share		120,978		125,005
Dilutive effect of:
Employee stock options		6		34
Restricted stock		284		525
Shares used to compute diluted earnings per common share		121,268		125,564
Basic earnings per common share		$	6.13	$	9.91
Diluted earnings per common share		$	6.11	$	9.87
Number of antidilutive stock options and restricted stock excluded from computation		1,165		538