XML 48 R28.htm IDEA: XBRL DOCUMENT
v3.23.1

Common Stock Repurchase Programs (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2023
Disclosure Common Stock Repurchase Program Additional Information [Abstract] |
Accelerated Share Repurchase Agreements | The following table summarizes the information regarding repurchases of our common stock under the ASRs:
Agreement Date |  | Repurchase Program |  | Amount Paid (in millions) |  | Completion Date |  | Total Shares Received |  | Average Price per Share
Q4 2022 |  | May 2021 |  | N/A 1 |  | Q1 2023 |  | 136,448 |  |  | $ | 293.15 |
Q1 2023 |  | May 2021 |  | $ | 250.0 |  |  | Q1 2023 |  | 805,908 |  |  | $ | 310.21 |
1 During the fourth quarter of 2022, we entered into a $200.0 million ASR which was not completed as of December 31, 2022. During the first quarter of 2023, we paid a final $40.0 million related to the $200.0 million ASR, closing this ASR with the final delivery of shares.

X
- Definition Disclosure - Common Stock Repurchase Program - Additional Information [Abstract] + References No definition available. + Details
Name: | algn_DisclosureCommonStockRepurchaseProgramAdditionalInformationAbstract
Namespace Prefix: | algn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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 https://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
Name: | us-gaap_AcceleratedShareRepurchasesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration