| First Quarter 2018 | 37,324,845 | 3,513 |
| * As of December 31, 2017, our Board of Directors has authorized repurchases totaling up to $12 billion of our outstanding common stock, including the authorization in October 2017 to repurchase $3 billion of additional shares. The authorizations from the Board of Directors do not have expiration dates. The share repurchases are expected to be funded primarily through available cash. The authorized shares will be repurchased from time to time in the open market at the company’s discretion, subject to market conditions and other factors, and in accordance with applicable regulatory requirements. We are not obligated to acquire any particular amount of common stock and may commence, suspend or discontinue purchases at any time or from time to time without prior notice. Shares of stock repurchased are held as treasury shares. In addition to shares purchased pursuant to our publicly announced repurchase program, we repurchased 35 million shares in a single transaction in February 2018 for approximately $3.3 billion. |
| First Quarter 2017 |
3,534,462 |
285 |
| Second Quarter 2017 |
4,856,492 |
381 |
| Third Quarter 2017 | 5,461,087 | 461 |
| Fourth Quarter 2017 | 4,885,840 | 463 |
| * As of December 31, 2017, our Board of Directors has authorized repurchases totaling up to $12 billion of our outstanding common stock, including the authorization in October 2017 to repurchase $3 billion of additional shares. The authorizations from the Board of Directors do not have expiration dates. The share repurchases are expected to be funded primarily through available cash. The authorized shares will be repurchased from time to time in the open market at the company’s discretion, subject to market conditions and other factors, and in accordance with applicable regulatory requirements. We are not obligated to acquire any particular amount of common stock and may commence, suspend or discontinue purchases at any time or from time to time without prior notice. Shares of stock repurchased are held as treasury shares. |
| First Quarter 2016 |
4,899,204 |
391 |
| Second Quarter 2016 |
2,932,668 |
242 |
| Third Quarter 2016 |
2,308,748 |
179 |
| Fourth Quarter 2016 |
2,760,737 |
230 |
| * Our Board of Directors has authorized repurchases totaling up to $9 billion of our outstanding common stock. The current authorization was announced in July 2014, in the amount of $2 billion, and increased to $4 billion as announced in October 2015. The authorization does not have an expiration date. The share repurchases are expected to be funded primarily through available cash. The shares under these authorizations will be repurchased from time to time in the open market at the company's discretion, subject to market conditions and other factors, and in accordance with applicable regulatory requirements. We are not obligated to acquire any particular amount of common stock and may commence, suspend or discontinue purchases at any time or from time to time without prior notice. Shares of stock repurchased are held as treasury shares. |
| First Quarter 2015 |
5,643,126 |
399 |
| Second Quarter 2015 |
4,195,639 |
334 |
| Third Quarter 2015 |
4,705,226 |
373 |
| Fourth Quarter 2015 |
4,731,932 |
406 |
| * Our Board of Directors has authorized repurchases totaling up to $9 billion of our outstanding common stock. The current authorization was announced in July 2014, in the amount of $2 billion, and increased to $4 billion as announced in October 2015. The authorization does not have an expiration date. The share repurchases are expected to be funded primarily through available cash. The shares under these authorizations will be repurchased from time to time in the open market at the company's discretion, subject to market conditions and other factors, and in accordance with applicable regulatory requirements. We are not obligated to acquire any particular amount of common stock and may commence, suspend or discontinue purchases at any time or from time to time without prior notice. Shares of stock repurchased are held as treasury shares. |
| First Quarter 2014 |
8,410,109 |
640 |
| Second Quarter 2014 |
7,517,519 |
616 |
| Third Quarter 2014 |
5,970,667 |
494 |
| Fourth Quarter 2014 |
7,222,694 |
532 |
| *During 2012 and 2013, our Board of Directors authorized the repurchase of up to $5 billion of our outstanding common stock. We began purchases under this authorization, which has no expiration date, in the third quarter of 2012. In July 2014, our Board of Directors approved the repurchase of an additional $2 billion of our outstanding common stock. The share repurchases are expected to be funded primarily through available cash. The shares under these authorizations will be repurchased from time to time in the open market at the company's discretion, subject to market conditions and other factors, and in accordance with applicable regulatory requirements. We are not obligated to acquire any particular amount of common stock and may commence, suspend or discontinue purchases at any time or from time to time without prior notice. Shares of stock repurchased are held as treasury shares. |
| First Quarter 2013 |
6,402,607 |
382 |
| Second Quarter 2013 |
8,622,142 |
546 |
| Third Quarter 2013 |
11,620,304 |
674 |
| Fourth Quarter 2013 |
9,857,431 |
644 |
| *During 2013, our Board of Directors authorized additional share repurchases of $1 billion and $2 billion on July 30 and December 6, respectively. The share repurchases are expected to be funded primarily through available cash. The shares under these authorizations will be repurchased from time to time in the open market at the company's discretion, subject to market conditions and other factors, and in accordance with applicable regulatory requirements and the Tax Sharing Agreement entered into in connection with the Separation. During 2012, our Board of Directors authorized the repurchase of up to $2 billion of our outstanding common stock. We began purchases under this authorization, which has no expiration date, in the third quarter of 2012, and completed the share repurchase program in October 2013. We are not obligated to acquire any particular amount of common stock and may commence, suspend or discontinue purchases at any time or from time to time without prior notice. Shares of stock repurchased are held as treasury shares. |
| Third Quarter 2012 |
2,594,400 |
111 |
| Fourth Quarter 2012 |
5,009,496 |
245 |
| *In July 2012, our Board of Directors authorized the repurchase of $1 billion of our outstanding common stock. We began purchases under this authorization, which has no expiration date, in the third quarter of 2012. In December 2012, an additional repurchase of up to $1 billion was approved by our Board of Directors, bringing the total program to $2 billion. The shares will be repurchased from time to time in the open market at the company's discretion, subject to market conditions and other factors, and in accordance with applicable regulatory requirements and the Tax Sharing Agreement entered into in connection with the Separation. We are not obligated to acquire any particular amount of common stock and may commence, suspend or discontinue purchases at any time or from time to time without prior notice. Shares of stock repurchased are held as treasury shares. |