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Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Changes in carrying amount |  |  |
Balance, beginning of period | $ 1,285,864,000 | $ 1,318,526,000 |
Reporting unit reallocation |  | 0 |
Additions | 947,000 | 0 |
Impairments | 0 | 0 | $ 0
Currency translation adjustments | (35,621,000) | (32,924,000) |
Adjustments to prior acquisitions | 87,000 | 262,000 |
Balance, end of period | 1,251,277,000 | 1,285,864,000 | 1,318,526,000
U.S. Higher Education |  |  |
Changes in carrying amount |  |  |
Balance, beginning of period | 632,075,000 | 732,075,000 |
Reporting unit reallocation |  | (100,000,000) |
Additions | 0 | 0 |
Impairments | 0 | 0 |
Currency translation adjustments | 0 | 0 |
Adjustments to prior acquisitions | 0 | 0 |
Balance, end of period | 632,075,000 | 632,075,000 | 732,075,000
Australia / New Zealand |  |  |
Changes in carrying amount |  |  |
Balance, beginning of period | 553,789,000 | 586,451,000 |
Reporting unit reallocation |  | 0 |
Additions | 947,000 | 0 |
Impairments | 0 | 0 |
Currency translation adjustments | (35,621,000) | (32,924,000) |
Adjustments to prior acquisitions | 87,000 | 262,000 |
Balance, end of period | 519,202,000 | 553,789,000 | 586,451,000
Education Technology Services |  |  |
Changes in carrying amount |  |  |
Balance, beginning of period | 100,000,000 | 0 |
Reporting unit reallocation |  | 100,000,000 |
Additions | 0 | 0 |
Impairments | 0 | 0 |
Currency translation adjustments | 0 | 0 |
Adjustments to prior acquisitions | 0 | 0 |
Balance, end of period | $ 100,000,000 | $ 100,000,000 | $ 0

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