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Summary of Quarterly Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2016
 [2]
Sep. 25, 2016
 [2],[3]
Jun. 26, 2016
Mar. 27, 2016
 [4]
Dec. 31, 2015
 [6]
Sep. 27, 2015
Jun. 28, 2015
Mar. 29, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information [Line Items]                      
Net sales $ 13,752 [1] $ 11,551 [1] $ 11,577 [1] $ 10,368 [1] $ 11,520 [5] $ 10,060 [5] $ 10,235 [5] $ 8,721 [5] $ 47,248 $ 40,536 $ 39,946
Operating profit 1,428 [1] 1,588 [1] 1,375 [1] 1,158 [1] 1,100 [5] 1,192 [5] 1,273 [5] 1,147 [5] 5,549 4,712 5,012
Net earnings from continuing operations 959 1,089 899 806 817 756 815 738 3,753 3,126 3,253
Net earnings from discontinued operations 29 1,306 122 92 116 109 114 140 1,549 479 361
Net earnings $ 988 $ 2,395 $ 1,021 $ 898 $ 933 [7] $ 865 [7] $ 929 [7] $ 878 [7] $ 5,302 $ 3,605 $ 3,614
Earnings per common share from continuing operations:                      
Basic $ 3.29 [8] $ 3.64 [8] $ 2.97 [8] $ 2.65 [8] $ 2.67 [8] $ 2.45 [8] $ 2.61 [8] $ 2.34 [8] $ 12.54 $ 10.07 $ 10.27
Diluted 3.25 [8] 3.61 [8] 2.93 [8] 2.61 [8] 2.63 [8] 2.42 [8] 2.58 [8] 2.30 [8] 12.38 9.93 10.09
Earnings per common share from discontinued operations:                      
Basic 0.10 [8] 4.38 [8] 0.40 [8] 0.30 [8] 0.38 [8] 0.35 [8] 0.37 [8] 0.44 [8] 5.17 1.55 1.14
Diluted 0.10 [8] 4.32 [8] 0.39 [8] 0.30 [8] 0.38 [8] 0.35 [8] 0.36 [8] 0.44 [8] 5.11 1.53 1.12
Basic earnings per common share 3.39 [8] 8.02 [8] 3.37 [8] 2.95 [8] 3.05 [8] 2.80 [8] 2.98 [8] 2.78 [8] 17.71 11.62 11.41
Diluted earnings per common share $ 3.35 [8] $ 7.93 [8] $ 3.32 [8] $ 2.91 [8] $ 3.01 [8] $ 2.77 [8] $ 2.94 [8] $ 2.74 [8] $ 17.49 $ 11.46 $ 11.21
[1] Net sales and operating profit vary from the amounts previously reported on Form 10-Q as a result of our former IS&GS business being classified as discontinued operations in the third quarter of 2016, which is reflected for all periods presented.
[2] The third quarter of 2016 includes the results of AWE from August 26, 2016, the date we obtained controlling interest, including approximately $103 million in net sales and $104 million in net earnings. Third quarter net earnings includes a non-cash gain on the step acquisition of AWE (see "Note 3 - Acquisitions and Divestitures"). The fourth quarter of 2016 includes the results of AWE for the entire quarter, including approximately $307 million in net sales and $2.9 million in net earnings.
[3] The third quarter of 2016 includes a net gain of $1.2 billion related to the divestiture of our former IS&GS business.
[4] The first quarter of 2016 varies from the amounts previously reported on Form 10-Q as a result of adopting ASU No. 2016-09 (see "Note 1 - Significant Accounting Policies").
[5] AOCL related to postretirement benefit plans is shown net of tax benefits at December 31, 2016, 2015 and 2014 of $6.5 billion, $6.2 billion and $6.4 billion. These tax benefits include amounts recognized on our income tax returns as current deductions and deferred income taxes, which will be recognized on our tax returns in future years. See "Note 9 - Income Taxes" and "Note 11 -Postretirement Plans" for more information on our income taxes and postretirement benefit plans.
[6] The fourth quarter of 2015 includes the results of Sikorsky since the November 6, 2015 acquisition date through December 31, 2015, including approximately $400 million in net sales and about $45 million in operating loss, inclusive of intangible amortization and adjustments required to account for the acquisition.
[7] The third and fourth quarters of 2015 include charges for workforce reductions of $15 million and $67 million ($10 million and $44 million after tax). The fourth quarter of 2015 includes a tax benefit of about $71 million due to the retroactive reinstatement of the R&D tax credit in 2015.
[8] The sum of the quarterly earnings per share amounts do not equal the earnings per share amounts included on our consolidated statements of earnings, primarily due to the timing of our share repurchases during each respective year.