Stock-Based Compensation Introduction Narrative (Details) shares in Millions	3 Months Ended
Mar. 31, 2016 Performance_metrics	May. 04, 2016 shares
Performance Share Units
The first performance metric	1
Restricted Stock Units (RSUs)
Award Vesting Period	3 years
Annual Vesting Percentage	33.33%
Options
Award Vesting Period	4 years
Annual Vesting Percentage	25.00%
Contractual Term	10 years
2016 \| Performance Share Units
Award Vesting Period	3 years
Number of Performance Metrics	2
2016 \| RTSR \| Minimum [Member] \| Performance Share Units
Award Vesting Rights Percentage	0.00%
2016 \| RTSR \| Maximum \| Performance Share Units
Award Vesting Rights Percentage	175.00%
2016 \| Cumulative Free Cash Flow [Member] \| Minimum [Member] \| Performance Share Units
Award Vesting Rights Percentage	0.00%
2016 \| Cumulative Free Cash Flow [Member] \| Maximum \| Performance Share Units
Award Vesting Rights Percentage	200.00%
Subsequent Event
RSUs and PSUs shares awarded subject to approval of the Amended and Restated Long-Term Incentive Plan \| shares		0.4

Number of performance metrics

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- Definition

The aggregate amount at target of performance RSUs and the PSUs based upon achievement of cumulative free cash flow awarded in February 2016, but subject to approval of the Amended and Restated Long-Term Incentive Plan at the 2016 Annual Meeting of Stockholders held on May 4, 2016 (the "Amended and Restated 2012 LTIP")

+ References

No definition available.

+ Details

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- Definition

Annual percentage of vesting of share-based compensation awards.

+ References

No definition available.

+ Details

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- Definition

The first performance metric

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

+ Details

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- Definition

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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