Represents a period when debt instrument is scheduled to be fully repaid.

No definition available.

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- Definition

Represents percentage of proceedings received as to par value, proceeding above the part value represents premium and below the par value signifies discount.

+ References

No definition available.

+ Details

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- Definition

Amount of additional borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

No definition available.

+ Details

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- Definition

Term Loan Credit Facility, Accordion Feature

+ References

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 835
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from borrowings supported by a written promise to pay an obligation that is uncollateralized (where debt is not backed by the pledge of collateral).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

+ References

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- Definition

Amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation.

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Debt - Narrative (Details)	1 Months Ended		3 Months Ended
Debt - Narrative (Details)	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)	Mar. 31, 2020 USD ($) Property	Mar. 31, 2019 USD ($)	Feb. 28, 2019 USD ($)
Debt Instrument [Line Items]
Pay-off of mortgage loans			$ 34,219,000	$ 0
Number of properties \| Property			166
Refinanced debt amount		$ 70,000,000.0
Derivative, fixed interest rate		4.00%
Proceeds from unsecured notes			$ 399,240,000	0
Repayments of unsecured debt			400,000,000	0
Loss from early extinguishment of debt			$ 4,827,000	0
Credit Agreement \| Unsecured revolving credit facility
Debt Instrument [Line Items]
Stated percentage			0.93%
Line of credit, required unused commitment fee per annum (percent)			0.20%
Weighted average annual interest rate (percent)			2.13%
Basis spread on variable rate			1.00%
Mortgage loans payable
Debt Instrument [Line Items]
Pay-off of mortgage loans			$ 34,200,000
Number of properties \| Property			1
Unsecured debt \| Unsecured revolving credit facility
Debt Instrument [Line Items]
Credit facility		$ 700,000,000			$ 1,000,000,000.0
Credit facility, additional borrowing capacity (up to)			$ 200,000,000
Line of credit, required unused commitment fee per annum (percent)			0.20%
Current borrowing capacity of credit facility			$ 390,300,000
Unsecured debt \| Unsecured term loans, net
Debt Instrument [Line Items]
Amount			$ 200,000,000
Stated percentage			1.44%
Weighted average annual interest rate (percent)			2.54%
Basis spread on variable rate			1.10%
Line of credit facility, accordion feature, increase limit			$ 100,000,000
AMERICAN CAMPUS COMMUNITIES OPERATING PARTNERSHIP LP
Debt Instrument [Line Items]
Pay-off of mortgage loans			34,219,000	0
Proceeds from unsecured notes			399,240,000	0
Repayments of unsecured debt			400,000,000	0
Loss from early extinguishment of debt			4,827,000	$ 0
AMERICAN CAMPUS COMMUNITIES OPERATING PARTNERSHIP LP \| Senior Notes - January 2020
Debt Instrument [Line Items]
Amount	$ 400,000,000		$ 400,000,000
Term (Years)	10 years
% of Par Value	99.81%		99.81%
Stated percentage	2.85%		2.85%
Proceeds from unsecured notes	$ 394,500,000
AMERICAN CAMPUS COMMUNITIES OPERATING PARTNERSHIP LP \| Senior notes - September 2015
Debt Instrument [Line Items]
Stated percentage			3.35%
Repayments of unsecured debt	$ 400,000,000