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Capital Stock, Dividends and Common Stock Repurchase Program (Tables) | 12 Months Ended
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Dec. 31, 2019
Capital Stock, Dividends and Common Stock Repurchase Program |
Summary of share repurchases under common stock repurchase program | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2019(a) |  | 2018(b) |  | 2017(c)
Shares repurchased (in thousands) |  | ​ | 2,247 |  | ​ | 11,673 |  | ​ | 10,058
Weighted average price per share |  | $ | 108.60 | ​ | $ | 86.35 | ​ | $ | 77.67
Total repurchases (in millions) | ​ | $ | 244 | ​ | $ | 1,008 | ​ | $ | 750
(a) | During 2019, we executed and completed an ASR agreement to repurchase $180 million of our common stock and received 1.6 million shares in connection with this ASR agreement. We also repurchased an additional 0.7 million shares of our common stock in open market transactions in compliance with Rule 10b5-1 and Rule 10b-18 of the Exchange Act for $64 million, inclusive of per-share commissions. As a result of the pending acquisition of Advanced Disposal discussed in Note 18, we limited our 2019 share repurchases to an amount sufficient to offset dilution impacts from our stock-based compensation plans.
(b) | During 2018, we executed and completed four ASR agreements to repurchase $850 million of our common stock and we received 9.8 million shares in connection with these ASR agreements. We also repurchased an additional 1.9 million shares of our common stock in open market transactions in compliance with Rule 10b5-1 and Rule 10b-18 of the Exchange Act for $158 million, inclusive of per-share commissions, which includes $4 million paid in 2019.
(c) | During 2017, we executed and completed two ASR agreements to repurchase $750 million of our common stock. Our “Shares repurchased” includes the 0.4 million shares related to the ASR agreement executed in November 2016.

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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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