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Discontinued Operations Discontinued Operations - (Details) - USD ($)		3 Months Ended	12 Months Ended
	Jul. 06, 2015	Oct. 04, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allocated Share-based Compensation Expense			$ 21,274,000	$ 15,158,000	$ 10,620,000
Discontinued Operations, Disposed of by Sale [Member]
Allocated Share-based Compensation Expense	$ 1,106,000
SISD [Member] | Discontinued Operations, Disposed of by Sale [Member]
Disposal Group, Including Discontinued Operation, Consideration	155,655,000
Disposal Group, Including Discontinued Operations, Transaction Costs	5,198,000
Gain on sale of discontinued business	$ 125,357,000		125,357,000	$ 0	$ 0
Income tax expense on discontinued operations			$ 47,175,000
Discontinued Operations, Disposed of by Sale [Member]
Allocated Share-based Compensation Expense		$ 1,106,000

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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 S99
-Paragraph 1
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Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
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-Section 45
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Amount of tax expense (benefit) on gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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