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v3.10.0.1

Computation of Basic and Diluted Net Income Per Class A and Class B Ordinary Share (Detail) ¥ / shares in Units, $ / shares in Units, ¥ in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2018 USD ($) $ / shares shares | Sep. 30, 2018 CNY (¥) ¥ / shares shares | Sep. 30, 2017 CNY (¥) ¥ / shares shares | Sep. 30, 2018 USD ($) $ / shares shares | Sep. 30, 2018 CNY (¥) ¥ / shares shares | Sep. 30, 2017 CNY (¥) ¥ / shares shares
Numerator |  |  |  |  |  |
Allocation of net income available to ordinary shareholders | $ 1,805 | ¥ 12,396 | ¥ 8,415 | $ 3,692 | ¥ 25,364 | ¥ 13,968
Class A Ordinary Shares |  |  |  |  |  |
Numerator |  |  |  |  |  |
Allocation of net income available to ordinary shareholders | $ 1,432 | ¥ 9,838 | ¥ 6,666 | $ 2,930 | ¥ 20,130 | ¥ 11,038
Denominator |  |  |  |  |  |
Denominator used for earnings per share | 27,690,479 | 27,690,479 | 27,489,083 | 27,693,504 | 27,693,504 | 27,425,010
Earnings per share - basic | (per share) | $ 51.73 | ¥ 355.27 | ¥ 242.48 | $ 105.83 | ¥ 726.87 | ¥ 402.48
Numerator |  |  |  |  |  |
Allocation of net income available to ordinary shareholders | $ 1,435 | ¥ 9,857 | ¥ 6,680 | $ 2,937 | ¥ 20,177 | ¥ 11,054
Reallocation of net income available to ordinary shareholders as a result of conversion of Class B to Class A shares | 370 | 2,539 | 1,735 | 755 | 5,187 | 2,914
Allocation of net income available to ordinary shareholders | $ 1,805 | ¥ 12,396 | ¥ 8,415 | $ 3,692 | ¥ 25,364 | ¥ 13,968
Denominator |  |  |  |  |  |
Weighted average ordinary shares outstanding | 27,690,479 | 27,690,479 | 27,489,083 | 27,693,504 | 27,693,504 | 27,425,010
Conversion of Class B to Class A ordinary shares | 7,201,254 | 7,201,254 | 7,214,841 | 7,201,254 | 7,201,254 | 7,280,283
Share-based awards | 267,014 | 267,014 | 287,253 | 318,479 | 318,479 | 189,712
Denominator used for earnings per share | 35,158,747 | 35,158,747 | 34,991,177 | 35,213,237 | 35,213,237 | 34,895,005
Earnings per share - diluted | (per share) | $ 51.34 | ¥ 352.57 | ¥ 240.49 | $ 104.88 | ¥ 720.30 | ¥ 400.29
Class A Ordinary Shares | American Depositary Shares |  |  |  |  |  |
Denominator |  |  |  |  |  |
Denominator used for earnings per share | 276,904,790 | 276,904,790 | 274,890,830 | 276,935,040 | 276,935,040 | 274,250,100
Earnings per share - basic | (per share) | $ 5.17 | ¥ 35.53 | ¥ 24.25 | $ 10.58 | ¥ 72.69 | ¥ 40.25
Denominator |  |  |  |  |  |
Weighted average ordinary shares outstanding | 276,904,790 | 276,904,790 | 274,890,830 | 276,935,040 | 276,935,040 | 274,250,100
Denominator used for earnings per share | 351,587,470 | 351,587,470 | 349,911,770 | 352,132,370 | 352,132,370 | 348,950,050
Earnings per share - diluted | (per share) | $ 5.13 | ¥ 35.26 | ¥ 24.05 | $ 10.49 | ¥ 72.03 | ¥ 40.03
Class B Ordinary Shares |  |  |  |  |  |
Numerator |  |  |  |  |  |
Allocation of net income available to ordinary shareholders | $ 373 | ¥ 2,558 | ¥ 1,749 | $ 762 | ¥ 5,234 | ¥ 2,930
Denominator |  |  |  |  |  |
Denominator used for earnings per share | 7,201,254 | 7,201,254 | 7,214,841 | 7,201,254 | 7,201,254 | 7,280,283
Earnings per share - basic | (per share) | $ 51.73 | ¥ 355.27 | ¥ 242.48 | $ 105.83 | ¥ 726.87 | ¥ 402.48
Numerator |  |  |  |  |  |
Allocation of net income available to ordinary shareholders | $ 370 | ¥ 2,539 | ¥ 1,735 | $ 755 | ¥ 5,187 | ¥ 2,914
Allocation of net income available to ordinary shareholders | $ 370 | ¥ 2,539 | ¥ 1,735 | $ 755 | ¥ 5,187 | ¥ 2,914
Denominator |  |  |  |  |  |
Weighted average ordinary shares outstanding | 7,201,254 | 7,201,254 | 7,214,841 | 7,201,254 | 7,201,254 | 7,280,283
Conversion of Class B to Class A ordinary shares | 0 | 0 | 0 | 0 | 0 | 0
Share-based awards | 0 | 0 | 0 | 0 | 0 | 0
Denominator used for earnings per share | 7,201,254 | 7,201,254 | 7,214,841 | 7,201,254 | 7,201,254 | 7,280,283
Earnings per share - diluted | (per share) | $ 51.34 | ¥ 352.57 | ¥ 240.49 | $ 104.88 | ¥ 720.30 | ¥ 400.29

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- Definition Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of dilutive convertible securities excluding adjustments related to ESOP convertible preferred stock, stock options, and restrictive stock units. + References No definition available. + Details
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1337-109256 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=109256448&loc=d3e4984-109258 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1252-109256 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109260490&loc=SL5780133-109256 + Details
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