Represents the entity's closing stock price.

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- Definition

Represents the number of entities into which the limited liability company was split.

+ References

No definition available.

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- Definition

Represents the benchmark value per share.

+ References

No definition available.

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- Definition

Represents the total fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

No definition available.

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- Definition

Estimated fair value of equity-based awards outstanding at the end of reporting period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of marketability and minority interest discounts.

+ References

No definition available.

+ Details

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph A240

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

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-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Description of the estimated period of time over which an employee is required to provide service in exchange for the equity-based payment award, which often is the vesting period. This period may be explicit or implicit based on the terms of the award, and may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(d)

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-Name Accounting Standards Codification

-Topic 718

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-Paragraph 2

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph e(2)(b)

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-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Subparagraph (f)(2)(ii)

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- Definition

Number of new stock issued during the period.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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Share-Based Compensation (Details) (USD $)	1 Months Ended				3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
Share-Based Compensation (Details) (USD $)	Oct. 31, 2007 CALLC Pre Split entity	May 31, 2011 CALLC -Post Split	Feb. 28, 2011 CALLC -Post Split	Feb. 28, 2011 CALLC II	Mar. 31, 2011 CALLC and CALLC II	Jun. 30, 2005 Override Value Units (a) CALLC and CALLC II	Mar. 31, 2012 Override Value Units (a) CALLC and CALLC II	Dec. 31, 2006 Override Value Units (b) CALLC and CALLC II	Mar. 31, 2012 Override Value Units (b) CALLC and CALLC II	Feb. 29, 2008 Override Units (c) CALLC III	Mar. 31, 2012 Override Units (c) CALLC III	Mar. 31, 2011 Override Units (c) CALLC and CALLC II	Mar. 31, 2012 Override Units (c) CALLC and CALLC II
Share-based Compensation
Number of entities into which the limited liability company was split	2
Number of shares of common stock sold pursuant to a registered public offering		7,988,179	11,759,023	15,113,254
Key information for the share-based compensation plans related to the override units of CALLC, CALLC II and CALLC III
Benchmark Value (per unit)							$ 11.31		$ 34.72				$ 10.00
Original Award Issued (in shares)						1,839,265		144,966		642,219
Compensation Expense Increase (Decrease)					$ 5,637,000		$ 4,987,000		$ 515,000			$ 135,000
Valuation Assumptions
Derived service period (in years)							6 years		6 years
CVR closing stock price (in dollars per share)							$ 23.16		$ 23.16
Estimated fair value (per unit)							$ 22.61		$ 13.70		$ 2.82
Marketability and minority interest discounts (as a percent)							5.00%		5.00%		5.00%
Volatility (as a percent)							47.10%		47.10%		47.00%
Information of all overrides value units that are initially subject to forfeiture
Estimated grant date fair value											$ 3,000
Number of units vested upon issuance (in shares)										109,720