Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Plans Activity

A summary of activity under Nucor’s stock option plans is as follows (shares in thousands):

	Year Ended December 31,
	2023					2022					2021
				Weighted-					Weighted-					Weighted-
				Average					Average					Average
				Exercise					Exercise					Exercise
	Shares			Price		Shares			Price		Shares			Price
Number of shares under stock options:
Outstanding at beginning of year		837		$	66.76		1,186		$	55.58		3,916		$	50.03
Granted		91		$	133.03		98		$	130.71		138		$	110.74
Exercised		(210	)	$	55.85		(447	)	$	51.14		(2,868	)	$	50.65
Canceled		—		$	—		—		$	—		—		$	—
Outstanding at end of year		718		$	78.33		837		$	66.76		1,186		$	55.58
Stock options exercisable at end of year		433		$	48.33		313		$	59.60		523		$	54.71

Summary of Stock Options Outstanding

The following table summarizes information about stock options outstanding at December 31, 2023 (shares in thousands):

	Options Outstanding					Options Exercisable
			Weighted-
			Average	Weighted-				Weighted-
Range of	Number		Remaining Contractual	Average Exercise		Number		Average Exercise
Exercise Prices	Outstanding		Life	Price		Exercisable		Price
$40.00 - $60.00		379	6.3 years	$	43.06		379	$	43.06
$60.01 - $75.00		33	4.4 years	$	65.80		33	$	65.80
$75.01 - $100.00		—	0.0 years	$	—		—	$	—
$100.01 - $120.00		122	7.4 years	$	110.74		15	$	110.74
$120.01 - $133.03		184	8.9 years	$	131.86		6	$	130.71
$40.00 - $133.03		718	7.1 years	$	78.33		433	$	48.33

Schedule of Grant Date Fair Value Black-Scholes Options-Pricing Model Assumptions

The fair value was estimated using the Black-Scholes options pricing model with the following assumptions:

	2023			2022			2021
Exercise price	$	133.03		$	130.71		$	110.74
Expected dividend yield		1.53	%		1.53	%		1.46	%
Expected stock price volatility		37.55	%		35.77	%		32.86	%
Risk-free interest rate		3.66	%		2.98	%		1.28	%
Expected life (years)		6.5			6.5			6.5

Summary of Nucor's RSU Activity

A summary of Nucor’s RSU activity is as follows (shares in thousands):

	Year Ended December 31,
	2023					2022					2021
				Grant Date					Grant Date					Grant Date
	Shares			Fair Value		Shares			Fair Value		Shares			Fair Value
Restricted stock units:
Unvested at beginning of year		1,003		$	98.66		1,167		$	60.45		1,830		$	47.33
Granted		831		$	133.03		774		$	130.71		397		$	110.74
Vested		(873	)	$	102.79		(916	)	$	77.21		(997	)	$	57.09
Canceled		(14	)	$	106.76		(22	)	$	93.73		(63	)	$	49.54
Unvested at end of year		947		$	124.89		1,003		$	98.66		1,167		$	60.45

Summary of Nucor's Restricted Stock Activity under AIP and LTIP

A summary of Nucor’s restricted stock activity under the AIP and the LTIP is as follows (shares in thousands):

	Year Ended December 31,
	2023					2022					2021
				Grant Date					Grant Date					Grant Date
	Shares			Fair Value		Shares			Fair Value		Shares			Fair Value
Restricted stock units and restricted    stock awards:
Unvested at beginning of year		209		$	108.55		107		$	57.17		127		$	49.94
Granted		414		$	171.38		465		$	128.62		262		$	65.61
Vested		(406	)	$	152.68		(356	)	$	119.29		(273	)	$	62.17
Canceled		(7	)	$	154.05		(7	)	$	113.86		(9	)	$	48.75
Unvested at end of year		210		$	145.55		209		$	108.55		107		$	57.17