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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) shares in Millions, $ in Millions | Total | Series B Preferred Stock | Series C Preferred Stock | Class A common stock | Class B common stock | Class C common stock | Preferred Stock | Preferred Stock Series B Preferred Stock | Preferred Stock Series C Preferred Stock | Common Stock Class A common stock | Common Stock Class B common stock | Common Stock Class C common stock | Treasury Stock | Right to Recover for Covered Losses | Additional Paid-In Capital | Accumulated Income | Accumulated Other Comprehensive Income (Loss)
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Beginning Balance (in shares) at Sep. 30, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,978 | 245 | 22 |  |  |  |  |
Beginning Balance at Sep. 30, 2014 |  | $ 27,413 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,299 | $ 9,131 | $ (17)
Net income |  | 6,328 | [1] |  |  | $ 5,044 | [1] | $ 1,045 | [1] | $ 224 | [1] |  |  |  |  |  |  |  |  |  |  |  | 6,328 |
Other comprehensive loss, net of tax |  | (57) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (57)
Comprehensive income |  | 6,271 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of class C common stock upon sale into public market (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11 |  | (2) |  |  |  |  |
Issuance and vesting of restricted stock and performance-based shares (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |
Share-based compensation, net of forfeitures (Note 15) (in shares) | [2] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) |  |  |  |  |  |  |
Share-based compensation, net of forfeitures (Note 15) |  | 187 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 187 |  |
Restricted stock and performance-based shares settled in cash for taxes (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) |  |  |  |  |  |  |
Restricted stock and performance-based shares settled in cash for taxes |  | (108) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (108) |  |
Excess tax benefit for share-based compensation |  | 84 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 84 |  |
Cash proceeds from issuance of common stock under employee equity plans (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |
Cash proceeds from issuance of common stock under employee equity plans |  | 82 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 82 |  |
Cash dividends declared and paid, at a quarterly amount of $0.165 in FY 2017, $0.14 in FY 2016, and $0.12 in FY 2015 per as-converted share |  | (1,177) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,177) |
Repurchase of class A common stock (Note 13) (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (44) |  |  |  |  |  |  |
Repurchase of class A common stock (Note 13) |  | (2,910) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (471) | (2,439) |
Ending Balance (in shares) at Sep. 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  | 0 | [3] | 0 | [3] | 1,950 | 245 | 20 |  |  |  |  |
Ending Balance at Sep. 30, 2015 |  | 29,842 |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  | $ 0 | $ 0 | 18,073 | 11,843 | (74)
Net income |  | 5,991 | [1],[4] |  |  | $ 4,738 | [1],[4] | 1,006 | [1],[4] | 185 | [1],[4] |  |  |  |  |  |  |  |  |  |  |  | 5,991 |
Other comprehensive loss, net of tax |  | (384) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (384)
Comprehensive income |  | 5,607 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock (Note 2 and Note 13) (in shares) | [3] |  |  |  |  |  |  |  |  |  |  |  | 2 |  | 3 |  |  |  |  |  |  |  |  |
Issuance of preferred stock (Note 2 and Note 13) |  | 5,717 |  |  |  |  |  |  |  |  |  | 5,717 |  |  |  |  |  |  |  |  |  |  |  |
VE territory covered losses incurred (Note 3) |  | (34) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (34) |  |  |
Class C common stock held by Visa Europe, a wholly-owned subsidiary of Visa Inc. (Note 13) (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |
Class C common stock held by Visa Europe, a wholly-owned subsidiary of Visa Inc. (Note 13) |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 170 |  |  |  |
Conversion of class C common stock upon sale into public market (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8 |  | (2) |  |  |  |  |
Issuance and vesting of restricted stock and performance-based shares (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |
Share-based compensation, net of forfeitures (Note 15) (in shares) | [5] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
Share-based compensation, net of forfeitures (Note 15) |  | 221 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 221 |  |
Restricted stock and performance-based shares settled in cash for taxes (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) |  |  |  |  |  |  |
Restricted stock and performance-based shares settled in cash for taxes |  | (92) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (92) |  |
Excess tax benefit for share-based compensation |  | 63 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 63 |  |
Cash proceeds from issuance of common stock under employee equity plans (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |
Cash proceeds from issuance of common stock under employee equity plans |  | 95 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 95 |  |
Cash dividends declared and paid, at a quarterly amount of $0.165 in FY 2017, $0.14 in FY 2016, and $0.12 in FY 2015 per as-converted share |  | (1,350) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,350) |
Repurchase of class A common stock (Note 13) (in shares) |  |  |  |  |  | (91) | [6],[7] |  |  |  |  |  |  |  |  |  | (91) |  |  |  |  |  |  |
Repurchase of class A common stock (Note 13) |  | (6,987) |  |  |  | $ (6,987) | [7] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (965) | (6,022) |
Ending Balance (in shares) at Sep. 30, 2016 |  |  |  |  |  |  |  |  |  |  |  |  | 2 | [8] | 3 | [8] | 1,871 | 245 | 17 |  |  |  |  |
Ending Balance at Sep. 30, 2016 |  | 32,912 |  |  |  |  |  |  |  |  |  | 5,717 | $ 2,516 |  | $ 3,201 |  |  |  |  | (170) | (34) | 17,395 | 10,462 | (458)
Net income |  | 6,699 | [1] |  |  | $ 5,170 | [1] | $ 1,134 | [1] | $ 163 | [1] |  |  |  |  |  |  |  |  |  |  |  | 6,699 |
Other comprehensive loss, net of tax |  | 1,336 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,336
Comprehensive income |  | 8,035 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recovery through conversion rate adjustment (Note 3 and Note 13) |  |  |  | $ 190 | $ 1 |  |  |  |  |  |  | (191) | $ (190) |  | $ (1) |  |  |  |  |  | 191 |  |  |
VE territory covered losses incurred (Note 3) |  | (209) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (209) |  |  |
Charitable contribution of Visa Inc. shares (Note 13 and Note 18) (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |
Charitable contribution of Visa Inc. shares (Note 13 and Note 18) |  | 170 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 170 |  |  |  |
Treasury Stock Appreciation, Net Of Tax |  | $ 14 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14 |  |
Conversion of class C common stock upon sale into public market (in shares) |  | 2,350 | [9] |  |  | 1,818 | [9],[10] | 405 | [9] | 51 | [9] |  |  |  |  |  | 17 |  | (4) |  |  |  |  |
Issuance and vesting of restricted stock and performance-based shares (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |
Share-based compensation, net of forfeitures (Note 15) (in shares) | [11] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
Share-based compensation, net of forfeitures (Note 15) |  | $ 235 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 235 |  |
Restricted stock and performance-based shares settled in cash for taxes (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) |  |  |  |  |  |  |
Restricted stock and performance-based shares settled in cash for taxes |  | (76) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (76) |  |
Cash proceeds from issuance of common stock under employee equity plans (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |
Cash proceeds from issuance of common stock under employee equity plans |  | 149 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 149 |  |
Cash dividends declared and paid, at a quarterly amount of $0.165 in FY 2017, $0.14 in FY 2016, and $0.12 in FY 2015 per as-converted share |  | (1,579) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,579) |
Repurchase of class A common stock (Note 13) (in shares) |  |  |  |  |  | (77) | [6],[7] |  |  |  |  |  |  |  |  |  | (77) |  |  |  |  |  |  |
Repurchase of class A common stock (Note 13) |  | (6,891) |  |  |  | $ (6,891) | [7] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (817) | (6,074) |
Ending Balance (in shares) at Sep. 30, 2017 |  |  |  |  |  |  |  |  |  |  |  |  | 2 | [8] | 3 | [8] | 1,818 | 245 | 13 |  |  |  |  |
Ending Balance at Sep. 30, 2017 |  | $ 32,760 |  |  |  |  |  |  |  |  |  | $ 5,526 | $ 2,326 |  | $ 3,200 |  |  |  |  | $ 0 | $ (52) | $ 16,900 | $ 9,508 | $ 878
[1] | Net income is allocated based on proportional ownership on an as-converted basis. The weighted-average number of shares of as-converted class B common stock used in the income allocation was 405 million for fiscal 2017, 2016 and 2015. The weighted-average number of shares of as-converted class C common stock used in the income allocation was 58 million, 75 million and 87 million for fiscal 2017, 2016 and 2015, respectively. The weighted-average number of shares of preferred stock, included within participating securities, was 33 million of as-converted UK&I preferred stock, and 44 million of as-converted Europe preferred stock for fiscal 2017.
[2] | Decrease in Class A common stock related to forfeitures of restricted stock awards.
[3] | Series B and C preferred stock are alternatively referred to as UK&I and Europe preferred stock, respectively.
[4] | See Note 2—Visa Europe.
[5] | Decrease in Class A common stock related to forfeitures of restricted stock awards is less than one million shares.
[6] | All shares repurchased in the open market have been retired and constitute authorized but unissued shares.
[7] | Shares repurchased in the open market reflect repurchases settled during fiscal 2017. These amounts include repurchases traded but not yet settled on or before September 30, 2016 for fiscal 2017 or September 30, 2015 for fiscal 2016 and exclude repurchases traded but not yet settled on or before September 30, 2017 for fiscal 2017 or September 30, 2016 for fiscal 2016.
[8] | Series B and C preferred stock are alternatively referred to as UK&I and Europe preferred stock, respectively.
[9] | Figures in the table may not recalculate exactly due to rounding. As-converted class A common stock is calculated based on unrounded numbers.
[10] | Class A common stock shares outstanding reflect repurchases settled on or before September 30, 2017.
[11] | Decrease in Class A common stock related to forfeitures of restricted stock awards is less than one million shares.

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