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Preferred and Common Stock (Tables) | 12 Months Ended
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Dec. 31, 2019
Equity [Abstract] |
Schedule of Share Activity | Share Activity (number of shares)
| Common stock
| Treasury |  | Outstanding
Balance at end of 2016 | — |  |  | 438,519,780 |
Conversion of convertible notes | — |  |  | 39,242,706 |
Issued for stock-based compensation plans | — |  |  | 3,654,051 |
Balance at end of 2017 | — |  |  | 481,416,537 |
Issued for stock-based compensation plans | — |  |  | 1,854,180 |
Balance at end of 2018 | — |  |  | 483,270,717 |
Issued for stock-based compensation plans | — |  |  | 4,436,830 |
Repurchase and retirement of common stock | — |  |  | (54,852,364 | )
Balance at end of 2019 | — |  |  | 432,855,183 |
Accelerated Share Repurchases | The following table provides details for the share repurchases during 2019.
Share delivery date | Number of shares |  | Average price |  | Total
February 21, 2019 | 31,908,831 |  |  |  |
April 29, 2019 | 4,525,592 |  |  |  |
February 2019 ASR total | 36,434,423 |  | $19.21 |  | $700
May 6, 2019 | 7,455,732 |  |  |  |
June 12, 2019 | 1,561,249 |  |  |  |
May 2019 ASR total | 9,016,981 |  | $22.18 |  | $200
August 8, 2019 | 6,791,172 |  |  |  |
October 3, 2019 | 983,107 |  |  |  |
August 2019 ASR total | 7,774,279 |  | $25.73 |  | $200
November 18, 2019 | 428,000 |  |  |  |
November 19, 2019 | 428,000 |  |  |  |
November 20, 2019 | 370,000 |  |  |  |
November 21, 2019 | 400,681 |  |  |  |
November 2019 share repurchase program | 1,626,681 |  | $30.74 |  | $50
2019 Share repurchase total | 54,852,364 |  | $20.97 |  | $1,150
Schedule of Activity for Stock Options and Stock Awards | The activity for stock options and stock awards during 2019 was as follows (options and awards in millions):
| Stock options |  | Stock awards
| Number of options |  | Weighted average exercise price |  | Number of awards |  | Weighted average FMV per award
Outstanding, December 31, 2018 | 10 |  |  | $ | 24.95 |  |  | 7 |  |  | $ | 21.13 |
Granted | — |  |  | — |  |  | 4 |  |  | 19.80 |
Exercised | (2 | ) |  | 21.34 |  |  | — |  |  | — |
Converted | — |  |  | — |  |  | (3 | ) |  | 15.78 |
Expired or forfeited | (1 | ) |  | 28.37 |  |  | (1 | ) |  | 22.10 |
Performance share adjustment | — |  |  | — |  |  | — |  |  | 19.96 |
Outstanding, December 31, 2019 | 7 |  |  | $ | 25.75 |  |  | 7 |  |  | $ | 22.05 |

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- Definition Tabular disclosure of accelerated share repurchase (ASR) programs. An ASR is a combination of transactions that permits an entity to purchase a targeted number of shares immediately with the final purchase price of those shares determined by an average market price over a fixed period of time. An accelerated share repurchase program is intended to combine the immediate share retirement benefits of a tender offer with the market impact and pricing benefits of a disciplined daily open market stock repurchase program. ASRs can be disclosed as part of stockholders' equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock options and stock appreciation rights that were outstanding at the beginning and end of the year, exercisable at the end of the year, and the number of stock options and stock appreciation rights that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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