Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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The maximum number of shares (or other type of equity) that have been approved for issuance in the equity-based payment transaction.

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Stock-Based Incentive Plans (Narrative) (Details)	12 Months Ended
Stock-Based Incentive Plans (Narrative) (Details)	Dec. 31, 1999	Dec. 31, 2014	May 17, 2011	Dec. 31, 2008
DineEquity, Inc. 2011 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Outstanding Options Authorized			1,500,000
IHOP Corp. 2001 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Outstanding Options Authorized				4,200,000
Stock Option Plan for Non-Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Approved for Issuance	400,000
Officers, Directors, and Employees \| Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Option Expiration Period		10 years
Officers, Directors, and Employees \| Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years