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Selected Quarterly Financial Information (Unaudited) | 12 Months Ended
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Sep. 30, 2017
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Information (Unaudited) | Selected Quarterly Financial Information (Unaudited) The following tables show a summary of the Company’s quarterly financial information for each of the four quarters of 2017 and 2016 (in millions, except per share amounts):
| Fourth Quarter |  | Third Quarter |  | Second Quarter |  | First Quarter
2017: |  |  |  |  |  |  |
Net sales | $ | 52,579 |  |  | $ | 45,408 |  |  | $ | 52,896 |  |  | $ | 78,351 |
Gross margin | $ | 19,931 |  |  | $ | 17,488 |  |  | $ | 20,591 |  |  | $ | 30,176 |
Net income | $ | 10,714 |  |  | $ | 8,717 |  |  | $ | 11,029 |  |  | $ | 17,891 |
Earnings per share (1): |  |  |  |  |  |  |
Basic | $ | 2.08 |  |  | $ | 1.68 |  |  | $ | 2.11 |  |  | $ | 3.38 |
Diluted | $ | 2.07 |  |  | $ | 1.67 |  |  | $ | 2.10 |  |  | $ | 3.36 |
| Fourth Quarter |  | Third Quarter |  | Second Quarter |  | First Quarter
2016: |  |  |  |  |  |  |
Net sales | $ | 46,852 |  |  | $ | 42,358 |  |  | $ | 50,557 |  |  | $ | 75,872 |
Gross margin | $ | 17,813 |  |  | $ | 16,106 |  |  | $ | 19,921 |  |  | $ | 30,423 |
Net income | $ | 9,014 |  |  | $ | 7,796 |  |  | $ | 10,516 |  |  | $ | 18,361 |
Earnings per share (1): |  |  |  |  |  |  |
Basic | $ | 1.68 |  |  | $ | 1.43 |  |  | $ | 1.91 |  |  | $ | 3.30 |
Diluted | $ | 1.67 |  |  | $ | 1.42 |  |  | $ | 1.90 |  |  | $ | 3.28 |
(1) | Basic and diluted earnings per share are computed independently for each of the quarters presented. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted earnings per share.

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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