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Amount, after accumulated amortization, of debt discount (premium).

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Debt and Other Financing Arrangements - Schedule of Debt and Other Financing Arrangements (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	May 23, 2022	Mar. 11, 2022
Debt Instrument [Line Items]
Finance lease obligations	$ 188,889	$ 188,386
Total long-term debt and finance lease obligations	6,926,154	6,855,477
Less premium on debt exchange	171,162	169,737
Less debt issuance costs	32,017	43,471	$ 5,900	$ 15,300
Total amounts outstanding	6,722,975	6,642,269
Less current maturities of long-term debt	60,000	10,000
Less current portion of finance lease obligations	14,102	18,582
Total long-term debt and finance lease obligations due after one year	6,648,873	6,613,687
Notes, 2.000%, due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	500,000	500,000
Notes, 3.950%, due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	500,000	500,000	500,000
Notes, 4.300%, due 2027 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	500,000	500,000	$ 500,000
Term Notes, 2.950%, due 2027 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	58,040	67,866
Notes, 3.950%, due 2028 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	500,000	500,000
Notes, 2.700%, due 2030 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	500,000	500,000
Notes, 3.125%, due 2032 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	550,000	550,000		550,000
Notes, 6.400%, due 2037 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	543,331	543,331
Notes, 5.200%, due 2043 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	338,133	338,133
Notes, 4.400%, due 2048 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	329,219	329,219
Notes, 3.850%, due 2052 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	550,000	550,000		$ 550,000
Notes, 2.979%, due 2055 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	439,312	439,312
Industrial Revenue Bonds [Member] \| Due from 2025 to 2061 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	1,349,230	$ 1,349,230
NUE NJSM Notes [Member] \| NJSM notes due from 2024 to 2026 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 80,000