This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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FAIR VALUE MEASUREMENTS - DOLLAR THRIFTY (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011 Dollar Thrifty Automotive Group Inc.	Jun. 30, 2013 Significant Unobservable Inputs (Level 3)	Dec. 31, 2011 Total Fair Value Assets (Liabilities) Dollar Thrifty Automotive Group Inc.	Sep. 30, 2012 Recurring Quoted Prices in Active Markets for Identical Assets (Level 1) Dollar Thrifty Automotive Group Inc.	Dec. 31, 2011 Recurring Quoted Prices in Active Markets for Identical Assets (Level 1) Dollar Thrifty Automotive Group Inc.	Dec. 31, 2010 Recurring Quoted Prices in Active Markets for Identical Assets (Level 1) Dollar Thrifty Automotive Group Inc.	Sep. 30, 2012 Recurring Significant Other Observable Inputs (Level 2) Dollar Thrifty Automotive Group Inc.	Dec. 31, 2011 Recurring Significant Other Observable Inputs (Level 2) Dollar Thrifty Automotive Group Inc.	Dec. 31, 2010 Recurring Significant Other Observable Inputs (Level 2) Dollar Thrifty Automotive Group Inc.	Dec. 31, 2011 Recurring Significant Unobservable Inputs (Level 3) Dollar Thrifty Automotive Group Inc.	Dec. 31, 2010 Recurring Significant Unobservable Inputs (Level 3) Dollar Thrifty Automotive Group Inc.	Sep. 30, 2012 Recurring Total Fair Value Assets (Liabilities) Dollar Thrifty Automotive Group Inc.	Dec. 31, 2011 Recurring Total Fair Value Assets (Liabilities) Dollar Thrifty Automotive Group Inc.	Dec. 31, 2010 Recurring Total Fair Value Assets (Liabilities) Dollar Thrifty Automotive Group Inc.
Fair value of assets and liabilities
Derivative Assets	$ 5,500,000	$ 4,500,000							$ 23,000	$ 548,000	$ 1,355,000			$ 23,000	$ 548,000	$ 1,355,000
Derivative Liabilities	(3,400,000)	(5,500,000)									(36,888,000)					(36,888,000)
Marketable Securities (available for sale)				132,000,000				169,000								169,000
Deferred Compensation Plan Assets						6,998,000	5,752,000				3,916,000			6,998,000	5,752,000	3,916,000
Total							5,752,000	169,000		548,000	(31,617,000)	0	0		6,300,000	(31,448,000)
Letters of credit			203,100,000		0
Surety bonds			$ 47,400,000		$ 0