Loans Receivable - Schedule of loans receivable in nonaccrual status (Details) $ in Millions	Jun. 30, 2025 USD ($) loan
Receivables [Abstract]
Number of Loans \| loan	5
Principal Outstanding	$ 280.1
Fair Value	$ 0.0

Loans Receivable, At Cost, Including Related Party, Nonaccrual

No definition available.

Name:	tiaareal_LoansReceivableAtCostIncludingRelatedPartyNonaccrual
Namespace Prefix:	tiaareal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant