Business Combination, Separately Recognized Transactions, Equity Awards, Forfeited, Percent

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- Definition

Preliminary Purchase Price Allocation Period

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, 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 350
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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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- Definition

Amount of deferred revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

Amount of deferred tax liability attributable to taxable temporary difference assumed at the acquisition date that are classified as current.

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- Definition

The amount of inventory recognized as of the acquisition date.

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

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- Definition

The assets recognized for each amount of assets recorded in a transaction with the acquiree that is recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

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- Definition

The expenses and losses recorded for each transaction with the acquiree that was recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

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- Definition

The amount of liabilities recognized recorded in a transaction with the acquiree for each transaction that is recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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ACQUISITIONS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Oct. 07, 2015	Jul. 14, 2015	Mar. 31, 2016	Jul. 13, 2015	Mar. 31, 2015	Mar. 31, 2014
Business Acquisition [Line Items]
Measurement period			1 year
Increase (decrease) in goodwill			$ 1,709,369		$ 197,445	$ 203,446
Weighted average useful life of acquired intangible assets			14 years 7 months 2 days
Backlog
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			2 years
Trademarks and trade names
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			8 years 6 months
Leasehold interest
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			5 years 7 months
Arbor Networks
Business Acquisition [Line Items]
Increase (decrease) in goodwill			$ 534,800
Tektronix Communications
Business Acquisition [Line Items]
Increase (decrease) in goodwill			794,400
VSS
Business Acquisition [Line Items]
Increase (decrease) in goodwill			57,000
FNET
Business Acquisition [Line Items]
Increase (decrease) in goodwill			$ 125,100
Cash retention award \| Vesting after August 4, 2015
Business Acquisition [Line Items]
Percent of cancelled Danaher equity awards replaced			50.00%
Restricted stock units \| Vesting after August 4, 2015
Business Acquisition [Line Items]
Shares issued in business acquisition (in shares)			15,000,000
Percent of cancelled Danaher equity awards replaced			50.00%
Post combination compensation expense, Danaher equity awards \| Vesting July 14, 2015 through August 4, 2015
Business Acquisition [Line Items]
Post combination compensation expense			$ 6,500
Post combination compensation expense, Danaher equity awards \| Vesting after August 4, 2015
Business Acquisition [Line Items]
Post combination compensation expense			8,000
Contingently returnable consideration, cash retention award \| Prepaid Expenses and Other Current Assets
Business Acquisition [Line Items]
Business combination, separately recognized transactions, assets recognized			7,800
Contingently returnable consideration, cash retention award \| Vesting after August 4, 2015 \| Prepaid Expenses and Other Current Assets
Business Acquisition [Line Items]
Business combination, separately recognized transactions, assets recognized			8,400
Contingently returnable consideration, tax effect of cash retention award \| Accounts payable
Business Acquisition [Line Items]
Business combination, separately recognized transactions, liabilities recognized			2,600
Cash retention award \| Vesting after August 4, 2015 \| Accrued compensation
Business Acquisition [Line Items]
Business combination, separately recognized transactions, liabilities recognized			8,000
Post combination compensation expense, Danaher bonus
Business Acquisition [Line Items]
Post combination compensation expense			9,300
Post combination compensation expense, Danaher retention
Business Acquisition [Line Items]
Post combination compensation expense			$ 7,800
Common stock Voting
Business Acquisition [Line Items]
Share price (in dollars per share)				$ 36.89
Communications Business
Business Acquisition [Line Items]
Total equity consideration	$ 5,700	$ 2,299,911
Increase (decrease) in accounts receivable	110	140,586
Increase in inventory	78	80,719
Decrease in prepaid expenses and other assets	(35)	(6,715)
Increase in property, plant and equipment	1,254	36,825
Increase (decrease) in accounts payable	8	21,311
Increase (decrease) in accrued expenses	176	12,916
Increase (decrease) in deferred revenue	65	187,882
Increase in deferred tax liabilities		344,646
Increase (decrease) in goodwill	$ 5,141	1,507,847
Weighted average useful life of acquired intangible assets			14 years 8 months
Revenues			$ 501,900
Net loss			65,400
Communications Business \| General and administrative
Business Acquisition [Line Items]
Acquisition related costs			$ 29,400
Communications Business \| Developed technology
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			11 years 8 months 12 days
Communications Business \| Customer relationships
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			16 years 3 months 18 days
Communications Business \| Backlog
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			2 years
Communications Business \| Trademarks and trade names
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			8 years 6 months
Communications Business \| Leasehold interest
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			5 years 7 months 6 days
Communications Business \| Arbor Networks
Business Acquisition [Line Items]
Increase (decrease) in goodwill		534,800
Communications Business \| Tektronix Communications
Business Acquisition [Line Items]
Increase (decrease) in goodwill		794,400
Communications Business \| VSS
Business Acquisition [Line Items]
Increase (decrease) in goodwill		57,000
Communications Business \| FNET
Business Acquisition [Line Items]
Increase (decrease) in goodwill		$ 125,100
Communications Business \| Common stock Voting \| Newco
Business Acquisition [Line Items]
Shares issued in business acquisition (in shares)		62,500,000
Communications Business \| Immaterial error correction
Business Acquisition [Line Items]
Increase in inventory			$ 200
Increase (decrease) in accounts payable			(600)
Increase (decrease) in accrued expenses			(4,800)
Increase (decrease) in deferred revenue			1,400
Increase (decrease) in goodwill			(4,200)
Communications Business \| Fair value adjustments
Business Acquisition [Line Items]
Total equity consideration			3,700
Increase (decrease) in accounts receivable			5,300
Increase in inventory			200
Decrease in prepaid expenses and other assets			400
Increase in property, plant and equipment			300
Increase (decrease) in accounts payable			100
Increase (decrease) in accrued expenses			3,400
Increase (decrease) in deferred revenue			(11,700)
Increase in deferred tax liabilities			25,000
Increase (decrease) in goodwill			$ 7,700