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Stockholders' Equity - Schedule of Change in Stockholder's Equity (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Oct. 01, 2016 | Sep. 30, 2017 | Oct. 01, 2016
Stockholders' Equity [Line Items] |  |  |  |
Stockholders' equity, beginning of period |  |  | $ 8,254,708 | $ 7,849,877
Total comprehensive income | $ 341,184 | $ 324,159 | 1,085,464 | 788,009
Stock options |  |  | 13,300 | 13,229
Issuance of stock under award plans, net of forfeitures |  |  | 30,787 | 25,929
Amortization of unearned compensation |  |  | 1,000 | 600
Treasury stock acquired |  |  | (90,305) | (5,173)
Dividends declared |  |  | (364,046) | (360,955)
Distributions to noncontrolling interests |  |  | (85,094) | (86,808)
Other |  |  |  | (2,378)
Stockholders' equity, end of period | 8,845,814 | 8,222,330 | 8,845,814 | 8,222,330
Total Nucor Stockholders' Equity [Member] |  |  |  |
Stockholders' Equity [Line Items] |  |  |  |
Stockholders' equity, beginning of period |  |  | 7,879,865 | 7,477,816
Total comprehensive income |  |  | 1,034,784 | 699,410
Stock options |  |  | 13,300 | 13,229
Issuance of stock under award plans, net of forfeitures |  |  | 30,787 | 25,929
Amortization of unearned compensation |  |  | 1,000 | 600
Treasury stock acquired |  |  | (90,305) | (5,173)
Dividends declared |  |  | (364,046) | (360,955)
Other |  |  |  | (602)
Stockholders' equity, end of period | 8,505,385 | 7,850,254 | 8,505,385 | 7,850,254
Noncontrolling Interests [Member] |  |  |  |
Stockholders' Equity [Line Items] |  |  |  |
Stockholders' equity, beginning of period |  |  | 374,843 | 372,061
Total comprehensive income |  |  | 50,680 | 88,599
Distributions to noncontrolling interests |  |  | (85,094) | (86,808)
Other |  |  |  | (1,776)
Stockholders' equity, end of period | $ 340,429 | $ 372,076 | $ 340,429 | $ 372,076

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