Concentration - Schedule of Segment Revenues (Details) - Revenue - Customer Concentration Risk	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
APUS Segment | DoD tuition assistance programs
Concentration Risk [Line Items]
Concentration risk percentage	45.00%	47.00%	47.00%	48.00%
APUS Segment | VA education benefits
Concentration Risk [Line Items]
Concentration risk percentage	24.00%	22.00%	24.00%	22.00%
APUS Segment | Title IV programs
Concentration Risk [Line Items]
Concentration risk percentage	17.00%	17.00%	16.00%	17.00%
APUS Segment | Cash and other sources
Concentration Risk [Line Items]
Concentration risk percentage	14.00%	14.00%	13.00%	13.00%
RU Segment | VA education benefits
Concentration Risk [Line Items]
Concentration risk percentage	2.00%	1.00%	1.00%	2.00%
RU Segment | Title IV programs
Concentration Risk [Line Items]
Concentration risk percentage	76.00%	75.00%	76.00%	74.00%
RU Segment | Cash and other sources
Concentration Risk [Line Items]
Concentration risk percentage	22.00%	24.00%	23.00%	24.00%
HCN Segment | VA education benefits
Concentration Risk [Line Items]
Concentration risk percentage	1.00%	2.00%	1.00%	1.00%
HCN Segment | Title IV programs
Concentration Risk [Line Items]
Concentration risk percentage	83.00%	79.00%	83.00%	79.00%
HCN Segment | Cash and other sources
Concentration Risk [Line Items]
Concentration risk percentage	16.00%	19.00%	16.00%	20.00%