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v3.23.1

Revenue from Contracts with Customers (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Apr. 30, 2020 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Disaggregation of Revenue [Line Items] |  |  |  |
Deferred revenue recognized in period related to beginning balance |  | $ 183,700 |  |
Deferred Revenue |  | $ 377,050 |  | $ 385,507
CARES Act relief from COVID-19 [Member] | Medicare Accelerated Advanced Payment Program Relief Fund [Member] | Graham Healthcare Group [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Government Relief, CARES Act | $ 31,500 |  |  |
Deferred revenue recognized |  |  | $ 6,400 |
Transferred over Time [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of Revenue |  | 55.00% | 61.00% |
Transferred at Point in Time [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of Revenue |  | 45.00% | 39.00% |
U.S. [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of Revenue |  | 79.00% | 79.00% |
Non-US [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of Revenue |  | 21.00% | 21.00% |
Kaplan International [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Contract with Customer, Asset, Net, Noncurrent |  | $ 34,100 |  | $ 26,300
Supplemental Education [Member] | Long-term Contract with Customer [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Minimum Term of Contract |  | 12 months |  |
Revenue Remaining Performance Obligation Percentage of Revenue Expected to be Recognized Over Next 12 Months |  | 67.00% |  |

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- Definition Amount received from the government as relief under the CARES Act + References No definition available. + Details
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130533-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 + Details
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 + Details
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