Hubbell (HUBB) 10-Q 26 Jul 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 21, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Amendment Flag	false
Entity Registrant Name	HUBBELL INCORPORATED
Entity Central Index Key	48,898
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock Shares Outstanding		54,702,464
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net sales	$ 948.3	$ 908.8	$ 1,800.6	$ 1,743.6
Cost of goods sold	653.6	615.3	1,244.1	1,190.2
Gross profit	294.7	293.5	556.5	553.4
Selling & administrative expenses	164.1	161.4	321.8	319.4
Operating income	130.6	132.1	234.7	234
Interest expense, net	(11.6)	(11.3)	(22.7)	(20.3)
Other (expense) income, net	(2.3)	(4)	(4.4)	(5.3)
Total other expense	(13.9)	(15.3)	(27.1)	(25.6)
Income before income taxes	116.7	116.8	207.6	208.4
Provision for income taxes	35.9	34.8	62.9	64.4
Net income	80.8	82	144.7	144
Less: Net income attributable to noncontrolling interest	1.7	1	2.8	2.1
Net income attributable to Hubbell	$ 79.1	$ 81	$ 141.9	$ 141.9
Earnings per share
Basic (USD per share)	$ 1.44	$ 1.46	$ 2.57	$ 2.54
Diluted (USD per share)	1.43	1.45	2.56	2.53
Cash dividends per common share (USD per share)	$ 0.7	$ 0.63	$ 1.4	$ 1.26

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 80.8	$ 82	$ 144.7	$ 144
Other comprehensive income (loss):
Foreign currency translation adjustments	7.7	(13.8)	19.2	(13.1)
Pension and post retirement benefit plans’ prior service costs and net actuarial gains, net of taxes	2	2.1	3.7	4.1
Unrealized gain (loss) on investments, net of taxes	0.1	0.2	0.5	0.5
Unrealized gain (loss) on cash flow hedges, net of taxes	(0.8)	(0.2)	(0.9)	(2.5)
Other comprehensive income (loss)	9	(11.7)	22.5	(11)
Total comprehensive income	89.8	70.3	167.2	133
Less: Comprehensive income attributable to noncontrolling interest	1.7	1	2.8	2.1
Comprehensive income attributable to Hubbell	$ 88.1	$ 69.3	$ 164.4	$ 130.9

Condensed Consolidated Stateme4

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Adjustment to pension and other benefit plans, tax impact	$ (1)	$ (1.2)	$ (1.9)	$ (2.5)
Unrealized gain or loss on investment, tax impact	0	(0.1)	(0.4)	(0.3)
Other Comprehensive Income, Unrealized Gain (loss) on derivatives arising during the period, tax	$ 0.3	$ 0	$ 0.4	$ 1

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 367.7	$ 437.6
Short-term investments	13.8	11.2
Accounts receivable, net	600.8	530
Inventories, net	585.3	532.4
Other current assets	42	40.1
Total Current Assets	1,609.6	1,551.3
Property, Plant, and Equipment, net	441.6	439.8
Other Assets
Investments	57.1	56.4
Goodwill	1,058.7	991
Intangible assets, net	446.8	431.5
Other long-term assets	52.9	55
TOTAL ASSETS	3,666.7	3,525
Current Liabilities
Short-term and current portion of long-term debt	403.4	3.2
Accounts payable	353	291.6
Accrued salaries, wages and employee benefits	56.7	82.8
Accrued insurance	62.4	55.8
Other accrued liabilities	149.8	156.2
Total Current Liabilities	1,025.3	589.6
Long-Term Debt	691.8	990.5
Other Non-Current Liabilities	346.4	341.7
TOTAL LIABILITIES	2,063.5	1,921.8
Total Hubbell Shareholders’ Equity	1,592.3	1,592.8
Noncontrolling interest	10.9	10.4
Total Equity	1,603.2	1,603.2
TOTAL LIABILITIES AND EQUITY	$ 3,666.7	$ 3,525

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows from Operating Activities
Net income	$ 144.7	$ 144
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	50.4	45.9
Deferred income taxes	3	(0.8)
Stock-based compensation	8.1	8.8
Changes in assets and liabilities, excluding effects of acquisitions:
Increase in accounts receivable, net	(61.7)	(40)
(Increase) decrease in inventories, net	(42.8)	4.1
Increase (decrease) in current liabilities	42.7	(33.5)
Changes in other assets and liabilities, net	(10.4)	(6.8)
Contribution to qualified defined benefit pension plans	(0.9)	(0.9)
Other, net	(1)	5.8
Net cash provided by operating activities	132.1	126.6
Cash Flows from Investing Activities
Capital expenditures	(33)	(29.9)
Acquisition of businesses, net of cash acquired	(108.5)	(171.6)
Purchases of available-for-sale investments	(8.6)	(5.8)
Proceeds from available-for-sale investments	8.4	5.8
Other, net	1.8	1
Net cash used in investing activities	(139.9)	(200.5)
Cash Flows from Financing Activities
Long-term debt borrowings	0	397
Short-term debt borrowings, net	100.8	10.1
Payment of dividends	(77.2)	(70.3)
Payment of dividends to noncontrolling interest	(2.3)	(1.3)
Repurchase of common shares	(92.6)	(246.8)
Debt issuance costs	0	(3.6)
Other, net	(3.4)	(3.2)
Net cash (used) provided by financing activities	(74.7)	81.9
Effect of foreign currency exchange rate changes on cash and cash equivalents	12.6	(13)
Decrease in cash and cash equivalents	(69.9)	(5)
Cash and cash equivalents
Beginning of period	437.6	343.5
End of period	$ 367.7	$ 338.5

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements of Hubbell Incorporated (“Hubbell”, the “Company”, “registrant”, “we”, “our” or “us”, which references shall include its divisions and subsidiaries) have been prepared in accordance with generally accepted accounting principles (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“U.S.”) for complete financial statements. In the opinion of management, all adjustments consisting only of normal recurring adjustments considered necessary for a fair statement of the results of the periods presented have been included. Operating results for the six months ended June 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 . The balance sheet at December 31, 2016 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the U.S. for complete financial statements. For further information, refer to the consolidated financial statements and footnotes thereto included in the Hubbell Incorporated Annual Report on Form 10-K for the year ended December 31, 2016 . Recent Accounting Pronouncements In March 2017, the Financial Accounting Standards Board ("FASB") issued an Accounting Standards Update (ASU 2017-07) on the presentation of net periodic pension cost and net periodic post-retirement benefit cost. The new guidance requires the service cost component of net periodic pension and post-retirement benefit costs to be reported in the same income statement line item as other employee compensation costs, and the other components to be reported outside of operating income. This new guidance is effective for fiscal years beginning after December 15, 2017 and must be applied on a retrospective basis. At this time, the Company does not expect the adoption of this guidance will have a material impact on its financial statements. In August 2016, the FASB issued an Accounting Standards Update (ASU 2016-15) to provide additional guidance and reduce diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This guidance is effective for fiscal years beginning after December 15, 2017 and early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of this guidance will have a material impact on its financial statements. In March 2016, the FASB issued an Accounting Standards Update (ASU 2016-09) relating to the accounting for share-based payments. The new guidance requires all income tax effects of share-based awards to be recognized in the income statement when the awards vest or are settled, and allows companies an additional election in the method to estimate forfeitures of share-based payments. The new guidance also requires excess tax benefits to be classified as an operating activity in the statement of cash flows and cash paid to a tax authority when shares are withheld to satisfy the employer's statutory income tax withholdings be classified as a financing activity. The Company adopted the standard on January 1, 2017. The Company elected to adopt all provisions impacting the Condensed Consolidated Statements of Cash Flows retrospectively: as such the comparable period within the Condensed Consolidated Statements of Cash Flows has been recast to reflect the adoption. The income statement provisions of the new guidance have been adopted prospectively. There is no change to the Company's accounting policy with respect to estimation of forfeitures. The adoption did not have a material impact on the Company's financial statements. In February 2016, the FASB issued an Accounting Standards Update (ASU 2016-02) related to the accounting for leases. This guidance will require a lessee to recognize a right-to-use asset and a lease liability for both financing and operating leases, with a policy election permitting an exception to this guidance for leases whose term is twelve months or less. For financing leases, the lessee will recognize interest expense and amortization of the right-of-use asset, and for operating leases the lessee will recognize a straight-line lease expense. This guidance is effective for fiscal years beginning after December 15, 2018, with early adoption permitted. The new standard must be adopted using a modified retrospective transition at the beginning of the earliest comparative period presented. We are currently reviewing the new guidance and will provide updates on the expected impact to the Company in future filings, as appropriate. In May 2014, the FASB issued an Accounting Standards Update (ASU 2014-09) related to new revenue recognition guidance that supersedes the existing revenue recognition guidance and most industry-specific guidance applicable to revenue recognition. According to the new guidance an entity will apply a principles-based five step model to recognize revenue upon the transfer of promised goods or services to customers and in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services. Subsequently, the FASB has issued amendments to certain aspects of the guidance including the effective date. This guidance is required to be effective beginning in the first quarter of 2018 and can be adopted on either a retrospective or modified-retrospective approach. The Company has a project team that is currently reviewing contract terms and assessing the impact of adopting the standard, including impacts to the Company's processes, controls and financial statement disclosures. The implementation team reports the progress and findings of its review to Management on a periodic basis. Based on the reviews and assessments performed to date, the Company expects the pattern of revenue recognition for the vast majority of its businesses to be unchanged, and that upon adoption revenue will generally continue to be recognized at a single point in time when control is transferred to the customer. In the second half of 2017 the Company expect to complete the assessment phase, evaluate and update controls and policies affected by the new standard, and identify and gather the data necessary for new disclosure requirements. We will provide additional updates in future filings, as appropriate.

Business Acquisitions

Business Acquisitions	6 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
Business Acquisitions	Business Acquisitions In the first quarter of 2017, the Company completed two acquisitions for $9.5 million , net of cash received, resulting in the recognition of intangible assets of $3.4 million and goodwill of $4.7 million . The $3.4 million of intangible assets consists primarily of customer relationships and trade names that will be amortized over a weighted average period of approximately 13 years . These acquisitions have been added to the Power segment and $2.7 million of the goodwill related to one of the acquisitions is currently expected to be deductible for tax purposes. In the second quarter of 2017, the Company acquired all of the issued and outstanding limited liability company interests in iDevices, LLC ("iDevices") for $59.2 million . iDevices is a developer with embedded firmware and application development expertise with custom-built Internet of Things ("IoT") Cloud infrastructure. The iDevices acquisition adds capabilities and expertise in IoT technology that is required to provide Tier 3 energy management solutions via connected hardware with a software front-end. iDevices has been allocated to the Electrical segment. We have recognized intangible assets of $9.6 million and goodwill of $45.4 million as a result of this acquisition. The $9.6 million of intangible assets consists primarily of developed technology, customer relationships and trade names and will be amortized over a weighted average period of approximately 12 years . All of the goodwill is expected to be deductible for tax purposes. In the second quarter of 2017, the Company also acquired substantially all of the assets of Advance Engineering Corporation and related companies (collectively "AEC") for $31.5 million . AEC is a gas components manufacturer that complements the Company's existing business in the natural gas distribution vertical. AEC joins the Company's recent acquisitions of GasBreaker and Lyall to bolster its main-to-meter mechanical solutions in this area. AEC has been added to the Electrical segment. We have recognized intangible assets of $18.5 million and goodwill of $10.0 million as a result of this acquisition. The $18.5 million of intangible assets consists primarily of customer relationships and trade names and will be amortized over a weighted average period of approximately 22 years. All of the goodwill is expected to be deductible for tax purposes. These business acquisitions have been accounted for as business combinations and have resulted in the recognition of goodwill. The goodwill relates to a number of factors built into the purchase price, including the future earnings and cash flow potential of the businesses as well as the complementary strategic fit and resulting synergies they bring to the Company’s existing operations. The following table summarizes the preliminary fair values of the assets acquired and liabilities assumed at the dates of acquisition related to these transactions (in millions): Tangible assets acquired $ 21.4 Intangible assets 31.5 Goodwill 60.1 Net deferred taxes (0.4 ) Other liabilities assumed (12.4 ) TOTAL CONSIDERATION, NET OF CASH RECEIVED $ 100.2 The allocation of purchase price for these acquisitions is based on preliminary estimates and assumptions, and is subject to revision based on final information received and other analysis that support the underlying estimates. We expect to complete our purchase accounting within the measurement period for each acquisition. The Condensed Consolidated Financial Statements include the results of operations of the entities acquired from the date of acquisition. Net sales and earnings related to these acquisitions for the six months ended June 30, 2017 were not significant to the consolidated results. Pro forma information related to these acquisitions has not been included because the impact to the Company’s consolidated results of operations was not material. Cash used for the acquisition of businesses, net of cash acquired as reported in the Consolidated Statement of Cash Flows for the six months ended June 30, 2017 , is $108.5 million and includes payments associated with a 2016 acquisition for which the purchase price is due to be settled in installments.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment Information	Segment Information The Company's reporting segments consist of the Electrical segment and the Power segment. The Electrical segment is comprised of businesses that sell stock and custom products including standard and special application wiring device products, rough-in electrical products, connector and grounding products, light fixtures and controls, components and assemblies for the natural gas distribution market as well as other electrical and communication equipment, some of which is designed such that it can also be used in harsh and hazardous locations primarily in the oil and gas (onshore and offshore) and mining industries. These products are primarily sold through electrical and industrial distributors, home centers, retail and hardware outlets, lighting showrooms and residential product-oriented internet sites. The Electrical segment is comprised of three business groups, which have been aggregated as they have similar long-term economic characteristics, customers and distribution channels, among other factors. The Power segment primarily serves the electric utility industry and is comprised of a wide variety of electrical distribution, transmission, and substation products with high voltage applications as well as telecommunication products. The following table sets forth financial information by business segment (in millions): Net Sales Operating Income Operating Income as a % of Net Sales 2017 2016 2017 2016 2017 2016 Three Months Ended June 30, Electrical $ 656.4 $ 641.4 $ 71.0 $ 77.1 10.8 % 12.0 % Power 291.9 267.4 59.6 55.0 20.4 % 20.6 % TOTAL $ 948.3 $ 908.8 $ 130.6 $ 132.1 13.8 % 14.5 % Six Months Ended June 30, Electrical $ 1,243.9 $ 1,224.1 $ 121.0 $ 132.5 9.7 % 10.8 % Power 556.7 519.5 113.7 101.5 20.4 % 19.5 % TOTAL $ 1,800.6 $ 1,743.6 $ 234.7 $ 234.0 13.0 % 13.4 %

Inventories, net

Inventories, net	6 Months Ended
	Jun. 30, 2017
Inventory, Net, Items Net of Reserve Alternative [Abstract]
Inventories, net	Inventories, net Inventories, net are comprised of the following (in millions): June 30, 2017 December 31, 2016 Raw material $ 180.0 $ 162.7 Work-in-process 115.5 102.8 Finished goods 350.7 327.9 646.2 593.4 Excess of FIFO over LIFO cost basis (60.9 ) (61.0 ) TOTAL $ 585.3 $ 532.4

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, net	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, net	Goodwill and Intangible Assets, net Changes in the carrying values of goodwill for the six months ended June 30, 2017 , were as follows (in millions): Segment Electrical Power Total BALANCE DECEMBER 31, 2016 $ 652.0 $ 339.0 $ 991.0 Current year acquisitions (Note 2 – Business Acquisitions) 55.4 4.7 60.1 Foreign currency translation and prior year acquisitions 5.1 2.5 7.6 BALANCE JUNE 30, 2017 $ 712.5 $ 346.2 $ 1,058.7 In the first quarter of 2017 we completed two acquisitions that were added to the Power segment. In the second quarter of 2017, the Company completed the acquisitions of AEC and iDevices. The AEC and iDevices acquisitions were added to the Electrical segment. These acquisitions have been accounted for as business combinations and have resulted in the recognition of $60.1 million of goodwill. See Note 2 – Business Acquisitions for additional information. The Company performs its goodwill impairment testing as of April 1st of each year, unless circumstances dictate the need for more frequent assessments. For the 2017 test, the Company applied the "Step-zero" test to two of its reporting units, which allows the Company to first assess qualitative factors to determine whether it is more likely than not that a reporting unit's fair value is greater than its carrying amount. Based on the qualitative assessment, the Company concluded that it was more likely than not that the fair value of these reporting units substantially exceeded their carrying values and therefore, further quantitative analysis was not required. For each of the Company's other reporting units, the Company has elected to utilize the two step goodwill impairment testing process as permitted in the accounting guidance. Step 1 compares the fair value of the Company's reporting units to their carrying values. If the fair value of the reporting unit exceeds its carrying value, no further analysis is necessary. If the carrying value of the reporting unit exceeds its fair value, Step 2 must be completed to quantify the amount of impairment. Goodwill impairment testing requires judgment, including the identification of reporting units, assigning assets and liabilities to reporting units and determining the fair value of each reporting unit. Significant judgment is required to estimate the fair value of reporting units including estimating future cash flows, determining appropriate discount rates and other assumptions. The Company uses internal discounted cash flow estimates to determine fair value. These cash flow estimates are derived from historical experience and future long-term business plans and the application of appropriate discount rates. The Company uses market-based multiples of select industrial competitors to validate the reasonableness of internal discounted cash flow estimates of fair value. Changes in these estimates and assumptions could affect the determination of fair value and/or goodwill impairment for each reporting unit. The Company's estimated aggregate fair value of its reporting units are reasonable when compared to the Company's market capitalization on the valuation date. As of April 1, 2017, the impairment testing resulted in implied fair values for each reporting unit that exceeded the reporting unit's carrying value, including goodwill. The Company did not have any reporting units at risk of failing Step 1 of the impairment test as the excess of the implied fair value significantly exceeded the carrying value of the reporting units. Additionally, the Company did not have any reporting units with zero or negative carrying amounts. The carrying value of other intangible assets included in Intangible assets, net in the Condensed Consolidated Balance Sheet is as follows (in millions): June 30, 2017 December 31, 2016 Gross Amount Accumulated Amortization Gross Amount Accumulated Amortization Definite-lived: Patents, tradenames and trademarks $ 150.8 $ (47.3 ) $ 143.7 $ (43.4 ) Customer/agent relationships and other 432.0 (142.4 ) 405.9 (128.0 ) Total $ 582.8 $ (189.7 ) $ 549.6 $ (171.4 ) Indefinite-lived: Tradenames and other 53.7 — 53.3 — TOTAL $ 636.5 $ (189.7 ) $ 602.9 $ (171.4 ) Amortization expense associated with definite-lived intangible assets was $17.5 million and $16.5 million for the six months ended June 30, 2017 and 2016 , respectively. Future amortization expense associated with these intangible assets is expected to be $17.0 million for the remainder of 2017 , $32.7 million in 2018 , $31.1 million in 2019 , $31.2 million in 2020 , $30.6 million in 2021 , and $29.2 million in 2022 .

Other Accrued Liabilities

Other Accrued Liabilities	6 Months Ended
	Jun. 30, 2017
Accrued Liabilities [Abstract]
Other Accrued Liabilities	Other Accrued Liabilities Other accrued liabilities are comprised of the following (in millions): June 30, 2017 December 31, 2016 Customer program incentives $ 28.7 $ 41.2 Accrued income taxes 9.0 8.4 Deferred revenue 12.1 11.8 Other 100.0 94.8 TOTAL $ 149.8 $ 156.2

Other Non-Current Liabilities

Other Non-Current Liabilities	6 Months Ended
	Jun. 30, 2017
Liabilities, Other than Long-term Debt, Noncurrent [Abstract]
Other Non-Current Liabilities	Other Non-Current Liabilities Other non-current liabilities are comprised of the following (in millions): June 30, 2017 December 31, 2016 Pensions $ 209.8 $ 208.3 Other post-retirement benefits 24.0 24.0 Deferred tax liabilities 44.6 41.2 Other 68.0 68.2 TOTAL $ 346.4 $ 341.7

Total Equity

Total Equity	6 Months Ended
	Jun. 30, 2017
Stockholders' Equity Note [Abstract]
Total Equity	Total Equity Total equity is comprised of the following (in millions, except per share amounts): June 30, 2017 December 31, 2016 Common stock, $.01 par value: Common Stock-- authorized 200.0 shares; issued and outstanding 54.7 and 55.5 shares $ 0.5 $ 0.6 Additional paid-in capital — 15.4 Retained earnings 1,871.8 1,879.3 Accumulated other comprehensive loss: Pension and post retirement benefit plan adjustment, net of tax (176.8 ) (180.5 ) Cumulative translation adjustment (101.6 ) (120.8 ) Unrealized gain on investment, net of tax (0.7 ) (1.2 ) Cash flow hedge (loss) gain, net of tax (0.9 ) — Total Accumulated other comprehensive loss (280.0 ) (302.5 ) Hubbell shareholders’ equity 1,592.3 1,592.8 Noncontrolling interest 10.9 10.4 TOTAL EQUITY $ 1,603.2 $ 1,603.2 For accounting purposes, the Company treats repurchased shares as constructively retired when acquired and accordingly charges the purchase price against Common Stock par value, Additional paid-in capital, to the extent available, and Retained earnings. As a result of this accounting treatment, during the first six months of 2017, $72.1 million of purchase price of repurchased shares was allocated to retained earnings. A summary of the changes in equity for the six months ended June 30, 2017 and 2016 is provided below (in millions): Six Months Ended June 30, 2017 2016 Hubbell Shareholders’ Equity Noncontrolling interest Total Equity Hubbell Shareholders’ Equity Noncontrolling interest Total Equity EQUITY, JANUARY 1 $ 1,592.8 $ 10.4 $ 1,603.2 $ 1,740.6 $ 8.4 $ 1,749.0 Total comprehensive income 164.4 2.8 167.2 130.9 2.1 133.0 Stock-based compensation 8.1 — 8.1 8.8 — 8.8 Income tax windfall from stock-based awards, net — — — 0.9 — 0.9 Repurchase/surrender of shares of common stock (96.0 ) — (96.0 ) (240.8 ) — (240.8 ) Issuance of shares related to directors’ deferred compensation, net 0.3 — 0.3 0.3 — 0.3 Dividends to noncontrolling interest — (2.3 ) (2.3 ) — (1.3 ) (1.3 ) Cash dividends declared (77.3 ) — (77.3 ) (70.5 ) — (70.5 ) EQUITY, JUNE 30 $ 1,592.3 $ 10.9 $ 1,603.2 $ 1,570.2 $ 9.2 $ 1,579.4 The detailed components of total comprehensive income are presented in the Condensed Consolidated Statement of Comprehensive Income.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss A summary of the changes in Accumulated other comprehensive loss (net of tax) for the six months ended June 30, 2017 is provided below (in millions): (debit) credit Cash flow hedge loss Unrealized gain (loss) on available-for- sale securities Pension and post retirement benefit plan adjustment Cumulative translation adjustment Total BALANCE AT DECEMBER 31, 2016 $ — $ (1.2 ) $ (180.5 ) $ (120.8 ) $ (302.5 ) Other comprehensive income (loss) before reclassifications (0.9 ) 0.5 — 19.2 18.8 Amounts reclassified from accumulated other comprehensive loss — — 3.7 — 3.7 Current period other comprehensive income (loss) (0.9 ) 0.5 3.7 19.2 22.5 BALANCE AT JUNE 30, 2017 $ (0.9 ) $ (0.7 ) $ (176.8 ) $ (101.6 ) $ (280.0 ) A summary of the gain (loss) reclassifications out of Accumulated other comprehensive loss for the three and six months ended June 30, 2017 and 2016 is provided below (in millions): Details about Accumulated Other Comprehensive Loss Components Three Months Ended June 30, 2017 Three Months Ended June 30, 2016 Location of Gain (Loss) Reclassified into Income Cash flow hedges gain (loss): Forward exchange contracts $ — $ (0.3 ) Net sales 0.1 (0.3 ) Cost of goods sold 0.1 (0.6 ) Total before tax — 0.2 Tax (expense) benefit $ 0.1 $ (0.4 ) Gain (loss) net of tax Defined benefit pension and post retirement benefit items: Amortization of prior-service costs $ 0.2 $ 0.2 (a) Amortization of actuarial gains/(losses) (2.7 ) (3.5 ) (a) Settlement and curtailment losses (0.5 ) — (a) (3.0 ) (3.3 ) Total before tax 1.0 1.2 Tax benefit (expense) $ (2.0 ) $ (2.1 ) (Loss) gain net of tax Losses reclassified into earnings $ (1.9 ) $ (2.5 ) (Loss) gain net of tax (a) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (see Note 11 - Pension and Other Benefits for additional details). Details about Accumulated Other Six Months Ended June 30, 2017 Six Months Ended June 30, 2016 Location of Gain (Loss) Cash flow hedges gain (loss): Forward exchange contracts $ — $ (0.2 ) Net sales — 0.7 Cost of goods sold — 0.5 Total before tax — (0.1 ) Tax (expense) benefit $ — $ 0.4 Gain (loss) net of tax Defined benefit pension and post retirement benefit items: Amortization of prior-service costs $ 0.4 $ 0.4 (a) Amortization of actuarial gains/(losses) (5.5 ) (7.0 ) (a) Settlement and curtailment losses (0.5 ) — (a) (5.6 ) (6.6 ) Total before tax 1.9 2.5 Tax benefit (expense) $ (3.7 ) $ (4.1 ) (Loss) gain net of tax Losses reclassified into earnings $ (3.7 ) $ (3.7 ) (Loss) gain net of tax (a) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (see Note 11 - Pension and Other Benefits for additional details).

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The Company computes earnings per share using the two-class method, which is an earnings allocation formula that determines earnings per share for common stock and participating securities. Service-based and performance-based restricted stock awards granted by the Company are considered participating securities as these awards contain a non-forfeitable right to dividends. The following table sets forth the computation of earnings per share for the three and six months ended June 30, 2017 and 2016 (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Numerator: Net income attributable to Hubbell $ 79.1 $ 81.0 $ 141.9 $ 141.9 Less: Earnings allocated to participating securities (0.3 ) (0.2 ) (0.5 ) (0.4 ) Net income available to common shareholders $ 78.8 $ 80.8 $ 141.4 $ 141.5 Denominator: Average number of common shares outstanding 54.8 55.3 55.0 55.8 Potential dilutive common shares 0.3 0.3 0.3 0.2 Average number of diluted shares outstanding 55.1 55.6 55.3 56.0 Earnings per share: Basic $ 1.44 $ 1.46 $ 2.57 $ 2.54 Diluted $ 1.43 $ 1.45 $ 2.56 $ 2.53 The Company did not have outstanding any significant anti-dilutive securities during the three and six months ended June 30, 2017 and 2016 .

Pension and Other Benefits

Pension and Other Benefits	6 Months Ended
	Jun. 30, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Pension and Other Benefits	Pension and Other Benefits The following table sets forth the components of net pension and other benefit costs for the three and six months ended June 30, 2017 and 2016 (in millions): Pension Benefits Other Benefits 2017 2016 2017 2016 Three Months Ended June 30, Service cost $ 1.5 $ 3.5 $ — $ — Interest cost 9.3 10.5 0.3 0.3 Expected return on plan assets (8.5 ) (11.0 ) — — Amortization of prior service cost — — (0.2 ) (0.2 ) Amortization of actuarial losses 2.7 3.5 — — Settlement and curtailment losses 0.5 — — — NET PERIODIC BENEFIT COST $ 5.5 $ 6.5 $ 0.1 $ 0.1 Six Months Ended June 30, Service cost $ 3.0 $ 7.0 $ — $ — Interest cost 18.5 21.0 0.4 0.6 Expected return on plan assets (17.0 ) (22.0 ) — — Amortization of prior service cost — — (0.4 ) (0.4 ) Amortization of actuarial losses/(gains) 5.5 7.0 — — Settlement and curtailment losses 0.5 — — — NET PERIODIC BENEFIT COST $ 10.5 $ 13.0 $ — $ 0.2 Employer Contributions Although not required by ERISA and the Internal Revenue Code, the Company may elect to make a voluntary contribution to its qualified domestic defined benefit pension plan in 2017. The Company anticipates making required contributions of approximately $1.7 million to its foreign pension plans during 2017 , of which $ 0.9 million has been contributed through June 30, 2017 .

Guarantees

Guarantees	6 Months Ended
	Jun. 30, 2017
Standard Product Warranty Disclosure [Abstract]
Guarantees	Guarantees The Company records a liability equal to the fair value of guarantees in accordance with the accounting guidance for guarantees. When it is probable that a liability has been incurred and the amount can be reasonably estimated, the Company accrues for costs associated with guarantees. The most likely costs to be incurred are accrued based on an evaluation of currently available facts and, where no amount within a range of estimates is more likely, the minimum is accrued. As of June 30, 2017 and December 31, 2016 , the fair value and maximum potential payment related to the Company’s guarantees were not material. The Company offers product warranties that cover defects on most of its products. These warranties primarily apply to products that are properly installed, maintained and used for their intended purpose. The Company accrues estimated warranty costs at the time of sale. Estimated warranty expenses, recorded in cost of goods sold, are based upon historical information such as past experience, product failure rates, or the estimated number of units to be repaired or replaced. Adjustments are made to the product warranty accrual as claims are incurred, additional information becomes known or as historical experience indicates. Changes in the accrual for product warranties during the six months ended June 30, 2017 and 2016 are set forth below (in millions): 2017 2016 BALANCE AT JANUARY 1, $ 13.2 $ 13.2 Provision 6.6 5.0 Expenditures/other (3.8 ) (4.8 ) BALANCE AT JUNE 30, $ 16.0 $ 13.4

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurement	Fair Value Measurement Investments At June 30, 2017 and December 31, 2016 , the Company had $58.2 million and $57.4 million , respectively, of available-for-sale securities, consisting of municipal bonds classified in Level 2 of the fair value hierarchy and an investment in the redeemable preferred stock of a privately-held electrical utility substation security provider classified in Level 3 of the fair value hierarchy. The Company also had $12.7 million of trading securities at June 30, 2017 and $10.2 million at December 31, 2016 that are carried on the balance sheet at fair value. Unrealized gains and losses associated with available-for-sale securities are reflected in Accumulated other comprehensive loss, net of tax, while unrealized gains and losses associated with trading securities are reflected in the results of operations. Fair value measurements Fair value is defined as the amount that would be received for selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The FASB fair value measurement guidance established a fair value hierarchy that prioritizes the inputs used to measure fair value. The three broad levels of the fair value hierarchy are as follows: Level 1 – Quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 – Quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly. Level 3 – Unobservable inputs for which little or no market data exists, therefore requiring a company to develop its own assumptions. The following table shows, by level within the fair value hierarchy, our financial assets and liabilities that are accounted for at fair value on a recurring basis at June 30, 2017 and December 31, 2016 (in millions): Asset (Liability) Quoted Prices in Active Markets for Identical Assets (Level 1) Quoted Prices in Active Markets for Similar Assets (Level 2) Unobservable inputs for which little or no market data exists (Level 3) Total June 30, 2017 Money market funds (a) $ 221.4 $ — $ — $ 221.4 Available for sale investments — 54.2 4.0 58.2 Trading securities 12.7 — — 12.7 Deferred compensation plan liabilities (12.7 ) — — (12.7 ) Derivatives: Forward exchange contracts-Assets (b) — — — — Forward exchange contracts-(Liabilities) (c) — (0.7 ) — (0.7 ) TOTAL $ 221.4 $ 53.5 $ 4.0 $ 278.9 Quoted Prices in Active Markets for Identical Assets (Level 1) Quoted Prices in Active Markets for Similar Assets (Level 2) Unobservable inputs for which little or no market data exists (Level 3) Total December 31, 2016 Money market funds (a) $ 263.5 $ — $ — $ 263.5 Available for sale investments — 53.6 3.8 57.4 Trading securities 10.2 — — 10.2 Deferred compensation plan liabilities (10.2 ) — — (10.2 ) Derivatives: Forward exchange contracts-Assets (b) — 0.8 — 0.8 Forward exchange contracts-(Liabilities) (c) — (0.1 ) — (0.1 ) TOTAL $ 263.5 $ 54.3 $ 3.8 $ 321.6 (a) Money market funds are reflected in Cash and cash equivalents in the Condensed Consolidated Balance Sheet. (b) Forward exchange contracts-Assets are reflected in Other current assets in the Condensed Consolidated Balance Sheet. (c) Forward exchange contracts-(Liabilities) are reflected in Other accrued liabilities in the Condensed Consolidated Balance Sheet. The methods and assumptions used to estimate the Level 2 and Level 3 fair values were as follows: Forward exchange contracts – The fair value of forward exchange contracts were based on quoted forward foreign exchange prices at the reporting date. Available-for-sale municipal bonds classified in Level 2 – The fair value of available-for-sale investments in municipal bonds is based on observable market-based inputs, other than quoted prices in active markets for identical assets. Available-for-sale redeemable preferred stock classified in Level 3 – The fair value of the available-for-sale investment in redeemable preferred stock is valued based on a discounted cash flow model, using significant unobservable inputs, including expected cash flows and the discount rate. During the three and six months ended June 30, 2017 there were no transfers of financial assets or liabilities in or out of Level 1 or Level 2 of the fair value hierarchy. There were also no transfers in or out of Level 3 during that period. Deferred compensation plans The Company offers certain employees the opportunity to participate in non-qualified deferred compensation plans. A participant’s deferrals are invested in a variety of participant-directed debt and equity mutual funds that are classified as trading securities. During the six months ended June 30, 2017 and 2016 , the Company purchased $1.9 million and $1.2 million , respectively, of trading securities related to these deferred compensation plans. As a result of participant distributions, the Company sold $0.3 million of these trading securities during the six months ended June 30, 2017 and $1.1 million during the six months ended June 30, 2016 . The unrealized gains and losses associated with these trading securities are directly offset by the changes in the fair value of the underlying deferred compensation plan obligation. Derivatives In order to limit financial risk in the management of its assets, liabilities and debt, the Company may use derivative financial instruments such as foreign currency hedges, commodity hedges, interest rate hedges and interest rate swaps. All derivative financial instruments are matched with an existing Company asset, liability or forecasted transaction. Market value gains or losses on the derivative financial instrument are recognized in income when the effects of the related price changes of the underlying asset, liability or forecasted transaction are recognized in income. Derivative assets and derivative liabilities are not offset in the Condensed Consolidated Balance Sheet. In 2017 and 2016 , the Company entered into a series of forward exchange contracts to purchase U.S. dollars in order to hedge exposure to fluctuating rates of exchange for both anticipated inventory purchases and forecasted sales by its subsidiaries that transact business in Canada. As of June 30, 2017 , the Company had 55 individual forward exchange contracts for an aggregate notional amount of $ 40.4 million , having various expiration dates through June 2018. These contracts have been designated as cash flow hedges in accordance with the accounting guidance for derivatives. The following table summarizes the results of cash flow hedging relationships for the three months ended June 30, 2017 and 2016 (in millions): Derivative Gain/(Loss) Recognized in Accumulated Other Comprehensive Income (net of tax) Location of Gain/(Loss) Reclassified into Income Gain/(Loss) Reclassified into Earnings Effective Portion (net of tax) Derivative Instrument 2017 2016 (Effective Portion) 2017 2016 Forward exchange contract $ (0.7 ) $ (0.6 ) Net sales $ — $ (0.2 ) Cost of goods sold $ 0.1 $ (0.2 ) The following table summarizes the results of cash flow hedging relationships for the six months ended June 30, 2017 and 2016 (in millions): Derivative Gain/(Loss) Recognized in Accumulated Other Comprehensive Loss (net of tax) Location of Gain/(Loss) Reclassified into Income Gain/(Loss) Reclassified into Earnings Effective Portion (net of tax) Derivative Instrument 2017 2016 (Effective Portion) 2017 2016 Forward exchange contract $ (0.9 ) $ (2.1 ) Net sales $ — $ (0.1 ) Cost of goods sold $ — $ 0.5 Hedge ineffectiveness was immaterial with respect to the forward exchange cash flow hedges during the three and six months ended June 30, 2017 and 2016 . Long Term Debt As of June 30, 2017 and December 31, 2016 , the estimated fair value of our long-term debt (inclusive of amounts classified on the Condensed Consolidated Balance Sheets as current and long-term) was $1,024.3 million and $1,017.8 million , respectively, using quoted market prices in active markets for similar liabilities (Level 2).

Commitment and Contingencies

Commitment and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company is subject to various legal proceedings arising in the normal course of its business. These proceedings include claims for damages arising out of use of the Company’s products, intellectual property, workers’ compensation and environmental matters. The Company is self-insured up to specified limits for certain types of claims, including product liability and workers’ compensation, and is fully self-insured for certain other types of claims, including environmental and intellectual property matters. The Company recognizes a liability for any contingency that in management’s judgment is probable of occurrence and can be reasonably estimated. We continually reassess the likelihood of adverse judgments and outcomes in these matters, as well as estimated ranges of possible losses based upon an analysis of each matter which includes consideration of outside legal counsel and, if applicable, other experts.

Restructuring Costs and Other

Restructuring Costs and Other	6 Months Ended
	Jun. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring Costs and Other	Restructuring Costs and Other In the six months ended June 30, 2017, we incurred costs for restructuring actions initiated in 2017 as well as costs for restructuring actions initiated in the prior year. Our restructuring actions are associated with cost reduction efforts that include the consolidation of manufacturing and distribution facilities as well as workforce reductions and the sale or exit of business units we determine to be non-strategic. Restructuring costs include severance and employee benefits, asset impairments, as well as facility closure, contract termination and certain pension costs that are directly related to restructuring actions. These costs are predominantly settled in cash from our operating activities and are generally settled within one year, with the exception of asset impairments, which are non-cash, and a $12.5 million charge in the fourth quarter of 2016 to recognize the estimated liability associated with the withdrawal from a multi-employer pension plan, which may be settled either in periodic payments over approximately 19 years, or in a lump sum, subject to negotiations expected to occur in the second half of 2017. Pre-tax restructuring costs incurred in each of our segments and the location of the costs in the Condensed Consolidated Statement of Income for the three and six months ended June 30, 2017 and 2016 is as follows (in millions): Three Months Ended June 30, 2017 2016 2017 2016 2017 2016 Cost of goods sold Selling & administrative expense Total Electrical Segment $ 2.5 $ 2.0 $ 1.4 $ 1.4 $ 3.9 $ 3.4 Power Segment 0.7 0.2 0.2 0.1 0.9 0.3 Total Pre-Tax Restructuring Costs $ 3.2 $ 2.2 $ 1.6 $ 1.5 $ 4.8 $ 3.7 Six Months Ended June 30, 2017 2016 2017 2016 2017 2016 Cost of goods sold Selling & administrative expense Total Electrical Segment $ 6.3 $ 3.8 $ 2.3 $ 5.1 $ 8.6 $ 8.9 Power Segment 1.1 0.2 0.5 0.4 1.6 0.6 Total Pre-Tax Restructuring Costs $ 7.4 $ 4.0 $ 2.8 $ 5.5 $ 10.2 $ 9.5 The following table summarizes the accrued liabilities for our restructuring actions (in millions): Beginning Accrued Restructuring Balance 1/1/17 Pre-tax Restructuring Costs Utilization and Foreign Exchange Ending Accrued Restructuring Balance 6/30/2017 2017 Restructuring Actions Severance $ — $ 4.9 $ (1.4 ) $ 3.5 Asset write-downs — — — — Facility closure and other costs — 1.6 (1.5 ) 0.1 Total 2017 Restructuring Actions $ — $ 6.5 $ (2.9 ) $ 3.6 2016 and Prior Restructuring Actions Severance $ 10.4 $ (0.4 ) $ (3.6 ) $ 6.4 Asset write-downs — — — — Facility closure and other costs (a) $ 14.1 $ 4.1 $ (4.4 ) $ 13.8 Total 2016 and Prior Restructuring Actions $ 24.5 $ 3.7 $ (8.0 ) $ 20.2 Total Restructuring Actions $ 24.5 $ 10.2 $ (10.9 ) $ 23.8 (a) Facility closure and other costs as of 1/1/17 includes a charge of approximately $12.5 million to accrue the estimated liability associated with the anticipated withdrawal from a multi-employer pension plan as a result of a restructuring action. The actual costs incurred and total expected cost of our on-going restructuring actions are as follows (in millions): Total expected costs Costs incurred during 2016 Costs incurred during first six months of 2017 Remaining costs at 6/30/2017 2017 Restructuring Actions Electrical Segment $ 6.3 $ — $ 4.9 $ 1.4 Power Segment 3.6 — 1.6 2.0 Total 2017 Restructuring Actions $ 9.9 $ — $ 6.5 $ 3.4 2016 and Prior Restructuring Actions Electrical Segment (a) 41.7 33.9 3.7 4.1 Power Segment 1.7 1.1 — 0.6 Total 2016 and Prior Restructuring Actions $ 43.4 $ 35.0 $ 3.7 $ 4.7 Total Restructuring Actions $ 53.3 $ 35.0 $ 10.2 $ 8.1 (a) Costs incurred in 2016 relating to 2016 Restructuring Actions in the Electrical segment include the $12.5 million previously mentioned charge representing the estimated withdrawal liability from a multi-employer pension plan. Any potential future liability in excess of the amount already recognized in 2016 is not included in the remaining costs at June 30, 2017. Additional information about the estimated withdrawal liability can be found in Note 10 - Retirement Benefits in the Notes to Consolidated Financial Statements in the Hubbell Incorporated Annual Report on Form 10-K for the year ended December 31, 2016 .

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements of Hubbell Incorporated (“Hubbell”, the “Company”, “registrant”, “we”, “our” or “us”, which references shall include its divisions and subsidiaries) have been prepared in accordance with generally accepted accounting principles (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“U.S.”) for complete financial statements. In the opinion of management, all adjustments consisting only of normal recurring adjustments considered necessary for a fair statement of the results of the periods presented have been included. Operating results for the six months ended June 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 . The balance sheet at December 31, 2016 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the U.S. for complete financial statements. For further information, refer to the consolidated financial statements and footnotes thereto included in the Hubbell Incorporated Annual Report on Form 10-K for the year ended December 31, 2016 .
Recent Accounting Pronouncements	Recent Accounting Pronouncements In March 2017, the Financial Accounting Standards Board ("FASB") issued an Accounting Standards Update (ASU 2017-07) on the presentation of net periodic pension cost and net periodic post-retirement benefit cost. The new guidance requires the service cost component of net periodic pension and post-retirement benefit costs to be reported in the same income statement line item as other employee compensation costs, and the other components to be reported outside of operating income. This new guidance is effective for fiscal years beginning after December 15, 2017 and must be applied on a retrospective basis. At this time, the Company does not expect the adoption of this guidance will have a material impact on its financial statements. In August 2016, the FASB issued an Accounting Standards Update (ASU 2016-15) to provide additional guidance and reduce diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This guidance is effective for fiscal years beginning after December 15, 2017 and early adoption is permitted, including adoption in an interim period. The Company does not expect the adoption of this guidance will have a material impact on its financial statements. In March 2016, the FASB issued an Accounting Standards Update (ASU 2016-09) relating to the accounting for share-based payments. The new guidance requires all income tax effects of share-based awards to be recognized in the income statement when the awards vest or are settled, and allows companies an additional election in the method to estimate forfeitures of share-based payments. The new guidance also requires excess tax benefits to be classified as an operating activity in the statement of cash flows and cash paid to a tax authority when shares are withheld to satisfy the employer's statutory income tax withholdings be classified as a financing activity. The Company adopted the standard on January 1, 2017. The Company elected to adopt all provisions impacting the Condensed Consolidated Statements of Cash Flows retrospectively: as such the comparable period within the Condensed Consolidated Statements of Cash Flows has been recast to reflect the adoption. The income statement provisions of the new guidance have been adopted prospectively. There is no change to the Company's accounting policy with respect to estimation of forfeitures. The adoption did not have a material impact on the Company's financial statements. In February 2016, the FASB issued an Accounting Standards Update (ASU 2016-02) related to the accounting for leases. This guidance will require a lessee to recognize a right-to-use asset and a lease liability for both financing and operating leases, with a policy election permitting an exception to this guidance for leases whose term is twelve months or less. For financing leases, the lessee will recognize interest expense and amortization of the right-of-use asset, and for operating leases the lessee will recognize a straight-line lease expense. This guidance is effective for fiscal years beginning after December 15, 2018, with early adoption permitted. The new standard must be adopted using a modified retrospective transition at the beginning of the earliest comparative period presented. We are currently reviewing the new guidance and will provide updates on the expected impact to the Company in future filings, as appropriate. In May 2014, the FASB issued an Accounting Standards Update (ASU 2014-09) related to new revenue recognition guidance that supersedes the existing revenue recognition guidance and most industry-specific guidance applicable to revenue recognition. According to the new guidance an entity will apply a principles-based five step model to recognize revenue upon the transfer of promised goods or services to customers and in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services. Subsequently, the FASB has issued amendments to certain aspects of the guidance including the effective date. This guidance is required to be effective beginning in the first quarter of 2018 and can be adopted on either a retrospective or modified-retrospective approach. The Company has a project team that is currently reviewing contract terms and assessing the impact of adopting the standard, including impacts to the Company's processes, controls and financial statement disclosures. The implementation team reports the progress and findings of its review to Management on a periodic basis. Based on the reviews and assessments performed to date, the Company expects the pattern of revenue recognition for the vast majority of its businesses to be unchanged, and that upon adoption revenue will generally continue to be recognized at a single point in time when control is transferred to the customer. In the second half of 2017 the Company expect to complete the assessment phase, evaluate and update controls and policies affected by the new standard, and identify and gather the data necessary for new disclosure requirements. We will provide additional updates in future filings, as appropriate.

Business Acquisitions (Tables)

Business Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
Summary of the preliminary fair values of the assets acquired and liabilities assumed	The following table summarizes the preliminary fair values of the assets acquired and liabilities assumed at the dates of acquisition related to these transactions (in millions): Tangible assets acquired $ 21.4 Intangible assets 31.5 Goodwill 60.1 Net deferred taxes (0.4 ) Other liabilities assumed (12.4 ) TOTAL CONSIDERATION, NET OF CASH RECEIVED $ 100.2

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Summary of segment information	The following table sets forth financial information by business segment (in millions): Net Sales Operating Income Operating Income as a % of Net Sales 2017 2016 2017 2016 2017 2016 Three Months Ended June 30, Electrical $ 656.4 $ 641.4 $ 71.0 $ 77.1 10.8 % 12.0 % Power 291.9 267.4 59.6 55.0 20.4 % 20.6 % TOTAL $ 948.3 $ 908.8 $ 130.6 $ 132.1 13.8 % 14.5 % Six Months Ended June 30, Electrical $ 1,243.9 $ 1,224.1 $ 121.0 $ 132.5 9.7 % 10.8 % Power 556.7 519.5 113.7 101.5 20.4 % 19.5 % TOTAL $ 1,800.6 $ 1,743.6 $ 234.7 $ 234.0 13.0 % 13.4 %

Inventories, net (Tables)

Inventories, net (Tables)	6 Months Ended
	Jun. 30, 2017
Inventory, Net, Items Net of Reserve Alternative [Abstract]
Schedule of inventory, net	Inventories, net are comprised of the following (in millions): June 30, 2017 December 31, 2016 Raw material $ 180.0 $ 162.7 Work-in-process 115.5 102.8 Finished goods 350.7 327.9 646.2 593.4 Excess of FIFO over LIFO cost basis (60.9 ) (61.0 ) TOTAL $ 585.3 $ 532.4

Goodwill and Intangible Asset26

Goodwill and Intangible Assets, net (Tables)	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of changes in goodwill	Changes in the carrying values of goodwill for the six months ended June 30, 2017 , were as follows (in millions): Segment Electrical Power Total BALANCE DECEMBER 31, 2016 $ 652.0 $ 339.0 $ 991.0 Current year acquisitions (Note 2 – Business Acquisitions) 55.4 4.7 60.1 Foreign currency translation and prior year acquisitions 5.1 2.5 7.6 BALANCE JUNE 30, 2017 $ 712.5 $ 346.2 $ 1,058.7
Schedule of intangible assets	The carrying value of other intangible assets included in Intangible assets, net in the Condensed Consolidated Balance Sheet is as follows (in millions): June 30, 2017 December 31, 2016 Gross Amount Accumulated Amortization Gross Amount Accumulated Amortization Definite-lived: Patents, tradenames and trademarks $ 150.8 $ (47.3 ) $ 143.7 $ (43.4 ) Customer/agent relationships and other 432.0 (142.4 ) 405.9 (128.0 ) Total $ 582.8 $ (189.7 ) $ 549.6 $ (171.4 ) Indefinite-lived: Tradenames and other 53.7 — 53.3 — TOTAL $ 636.5 $ (189.7 ) $ 602.9 $ (171.4 )

Other Accrued Liabilities (Tabl

Other Accrued Liabilities (Tables)	6 Months Ended
	Jun. 30, 2017
Accrued Liabilities [Abstract]
Schedule of other accrued liabilities	Other accrued liabilities are comprised of the following (in millions): June 30, 2017 December 31, 2016 Customer program incentives $ 28.7 $ 41.2 Accrued income taxes 9.0 8.4 Deferred revenue 12.1 11.8 Other 100.0 94.8 TOTAL $ 149.8 $ 156.2

Other Non-Current Liabilities (

Other Non-Current Liabilities (Tables)	6 Months Ended
	Jun. 30, 2017
Liabilities, Other than Long-term Debt, Noncurrent [Abstract]
Summary of other non-current liabilities	Other non-current liabilities are comprised of the following (in millions): June 30, 2017 December 31, 2016 Pensions $ 209.8 $ 208.3 Other post-retirement benefits 24.0 24.0 Deferred tax liabilities 44.6 41.2 Other 68.0 68.2 TOTAL $ 346.4 $ 341.7

Total Equity(Tables)

Total Equity(Tables)	6 Months Ended
	Jun. 30, 2017
Stockholders' Equity Note [Abstract]
Schedule of stockholders equity	Total equity is comprised of the following (in millions, except per share amounts): June 30, 2017 December 31, 2016 Common stock, $.01 par value: Common Stock-- authorized 200.0 shares; issued and outstanding 54.7 and 55.5 shares $ 0.5 $ 0.6 Additional paid-in capital — 15.4 Retained earnings 1,871.8 1,879.3 Accumulated other comprehensive loss: Pension and post retirement benefit plan adjustment, net of tax (176.8 ) (180.5 ) Cumulative translation adjustment (101.6 ) (120.8 ) Unrealized gain on investment, net of tax (0.7 ) (1.2 ) Cash flow hedge (loss) gain, net of tax (0.9 ) — Total Accumulated other comprehensive loss (280.0 ) (302.5 ) Hubbell shareholders’ equity 1,592.3 1,592.8 Noncontrolling interest 10.9 10.4 TOTAL EQUITY $ 1,603.2 $ 1,603.2 For accounting purposes, the Company treats repurchased shares as constructively retired when acquired and accordingly charges the purchase price against Common Stock par value, Additional paid-in capital, to the extent available, and Retained earnings. As a result of this accounting treatment, during the first six months of 2017, $72.1 million of purchase price of repurchased shares was allocated to retained earnings. A summary of the changes in equity for the six months ended June 30, 2017 and 2016 is provided below (in millions): Six Months Ended June 30, 2017 2016 Hubbell Shareholders’ Equity Noncontrolling interest Total Equity Hubbell Shareholders’ Equity Noncontrolling interest Total Equity EQUITY, JANUARY 1 $ 1,592.8 $ 10.4 $ 1,603.2 $ 1,740.6 $ 8.4 $ 1,749.0 Total comprehensive income 164.4 2.8 167.2 130.9 2.1 133.0 Stock-based compensation 8.1 — 8.1 8.8 — 8.8 Income tax windfall from stock-based awards, net — — — 0.9 — 0.9 Repurchase/surrender of shares of common stock (96.0 ) — (96.0 ) (240.8 ) — (240.8 ) Issuance of shares related to directors’ deferred compensation, net 0.3 — 0.3 0.3 — 0.3 Dividends to noncontrolling interest — (2.3 ) (2.3 ) — (1.3 ) (1.3 ) Cash dividends declared (77.3 ) — (77.3 ) (70.5 ) — (70.5 ) EQUITY, JUNE 30 $ 1,592.3 $ 10.9 $ 1,603.2 $ 1,570.2 $ 9.2 $ 1,579.4

Accumulated Other Comprehensi30

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of accumulated other comprehensive income loss	A summary of the changes in Accumulated other comprehensive loss (net of tax) for the six months ended June 30, 2017 is provided below (in millions): (debit) credit Cash flow hedge loss Unrealized gain (loss) on available-for- sale securities Pension and post retirement benefit plan adjustment Cumulative translation adjustment Total BALANCE AT DECEMBER 31, 2016 $ — $ (1.2 ) $ (180.5 ) $ (120.8 ) $ (302.5 ) Other comprehensive income (loss) before reclassifications (0.9 ) 0.5 — 19.2 18.8 Amounts reclassified from accumulated other comprehensive loss — — 3.7 — 3.7 Current period other comprehensive income (loss) (0.9 ) 0.5 3.7 19.2 22.5 BALANCE AT JUNE 30, 2017 $ (0.9 ) $ (0.7 ) $ (176.8 ) $ (101.6 ) $ (280.0 )
Reclassification out of accumulated other comprehensive income	A summary of the gain (loss) reclassifications out of Accumulated other comprehensive loss for the three and six months ended June 30, 2017 and 2016 is provided below (in millions): Details about Accumulated Other Comprehensive Loss Components Three Months Ended June 30, 2017 Three Months Ended June 30, 2016 Location of Gain (Loss) Reclassified into Income Cash flow hedges gain (loss): Forward exchange contracts $ — $ (0.3 ) Net sales 0.1 (0.3 ) Cost of goods sold 0.1 (0.6 ) Total before tax — 0.2 Tax (expense) benefit $ 0.1 $ (0.4 ) Gain (loss) net of tax Defined benefit pension and post retirement benefit items: Amortization of prior-service costs $ 0.2 $ 0.2 (a) Amortization of actuarial gains/(losses) (2.7 ) (3.5 ) (a) Settlement and curtailment losses (0.5 ) — (a) (3.0 ) (3.3 ) Total before tax 1.0 1.2 Tax benefit (expense) $ (2.0 ) $ (2.1 ) (Loss) gain net of tax Losses reclassified into earnings $ (1.9 ) $ (2.5 ) (Loss) gain net of tax (a) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (see Note 11 - Pension and Other Benefits for additional details). Details about Accumulated Other Six Months Ended June 30, 2017 Six Months Ended June 30, 2016 Location of Gain (Loss) Cash flow hedges gain (loss): Forward exchange contracts $ — $ (0.2 ) Net sales — 0.7 Cost of goods sold — 0.5 Total before tax — (0.1 ) Tax (expense) benefit $ — $ 0.4 Gain (loss) net of tax Defined benefit pension and post retirement benefit items: Amortization of prior-service costs $ 0.4 $ 0.4 (a) Amortization of actuarial gains/(losses) (5.5 ) (7.0 ) (a) Settlement and curtailment losses (0.5 ) — (a) (5.6 ) (6.6 ) Total before tax 1.9 2.5 Tax benefit (expense) $ (3.7 ) $ (4.1 ) (Loss) gain net of tax Losses reclassified into earnings $ (3.7 ) $ (3.7 ) (Loss) gain net of tax (a) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (see Note 11 - Pension and Other Benefits for additional details).

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Summary of the computation of earnings per share	The following table sets forth the computation of earnings per share for the three and six months ended June 30, 2017 and 2016 (in millions, except per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Numerator: Net income attributable to Hubbell $ 79.1 $ 81.0 $ 141.9 $ 141.9 Less: Earnings allocated to participating securities (0.3 ) (0.2 ) (0.5 ) (0.4 ) Net income available to common shareholders $ 78.8 $ 80.8 $ 141.4 $ 141.5 Denominator: Average number of common shares outstanding 54.8 55.3 55.0 55.8 Potential dilutive common shares 0.3 0.3 0.3 0.2 Average number of diluted shares outstanding 55.1 55.6 55.3 56.0 Earnings per share: Basic $ 1.44 $ 1.46 $ 2.57 $ 2.54 Diluted $ 1.43 $ 1.45 $ 2.56 $ 2.53

Pension and Other Benefits (Tab

Pension and Other Benefits (Tables)	6 Months Ended
	Jun. 30, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Schedule of net pension and other benefit costs	The following table sets forth the components of net pension and other benefit costs for the three and six months ended June 30, 2017 and 2016 (in millions): Pension Benefits Other Benefits 2017 2016 2017 2016 Three Months Ended June 30, Service cost $ 1.5 $ 3.5 $ — $ — Interest cost 9.3 10.5 0.3 0.3 Expected return on plan assets (8.5 ) (11.0 ) — — Amortization of prior service cost — — (0.2 ) (0.2 ) Amortization of actuarial losses 2.7 3.5 — — Settlement and curtailment losses 0.5 — — — NET PERIODIC BENEFIT COST $ 5.5 $ 6.5 $ 0.1 $ 0.1 Six Months Ended June 30, Service cost $ 3.0 $ 7.0 $ — $ — Interest cost 18.5 21.0 0.4 0.6 Expected return on plan assets (17.0 ) (22.0 ) — — Amortization of prior service cost — — (0.4 ) (0.4 ) Amortization of actuarial losses/(gains) 5.5 7.0 — — Settlement and curtailment losses 0.5 — — — NET PERIODIC BENEFIT COST $ 10.5 $ 13.0 $ — $ 0.2

Guarantees (Tables)

Guarantees (Tables)	6 Months Ended
	Jun. 30, 2017
Standard Product Warranty Disclosure [Abstract]
Schedule of product warranty liability	Changes in the accrual for product warranties during the six months ended June 30, 2017 and 2016 are set forth below (in millions): 2017 2016 BALANCE AT JANUARY 1, $ 13.2 $ 13.2 Provision 6.6 5.0 Expenditures/other (3.8 ) (4.8 ) BALANCE AT JUNE 30, $ 16.0 $ 13.4

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Summary of financial assets and liability by fair value hierarchy level	The following table shows, by level within the fair value hierarchy, our financial assets and liabilities that are accounted for at fair value on a recurring basis at June 30, 2017 and December 31, 2016 (in millions): Asset (Liability) Quoted Prices in Active Markets for Identical Assets (Level 1) Quoted Prices in Active Markets for Similar Assets (Level 2) Unobservable inputs for which little or no market data exists (Level 3) Total June 30, 2017 Money market funds (a) $ 221.4 $ — $ — $ 221.4 Available for sale investments — 54.2 4.0 58.2 Trading securities 12.7 — — 12.7 Deferred compensation plan liabilities (12.7 ) — — (12.7 ) Derivatives: Forward exchange contracts-Assets (b) — — — — Forward exchange contracts-(Liabilities) (c) — (0.7 ) — (0.7 ) TOTAL $ 221.4 $ 53.5 $ 4.0 $ 278.9 Quoted Prices in Active Markets for Identical Assets (Level 1) Quoted Prices in Active Markets for Similar Assets (Level 2) Unobservable inputs for which little or no market data exists (Level 3) Total December 31, 2016 Money market funds (a) $ 263.5 $ — $ — $ 263.5 Available for sale investments — 53.6 3.8 57.4 Trading securities 10.2 — — 10.2 Deferred compensation plan liabilities (10.2 ) — — (10.2 ) Derivatives: Forward exchange contracts-Assets (b) — 0.8 — 0.8 Forward exchange contracts-(Liabilities) (c) — (0.1 ) — (0.1 ) TOTAL $ 263.5 $ 54.3 $ 3.8 $ 321.6 (a) Money market funds are reflected in Cash and cash equivalents in the Condensed Consolidated Balance Sheet. (b) Forward exchange contracts-Assets are reflected in Other current assets in the Condensed Consolidated Balance Sheet. (c) Forward exchange contracts-(Liabilities) are reflected in Other accrued liabilities in the Condensed Consolidated Balance Sheet.
Summary of the results of cash flow hedging relationships	The following table summarizes the results of cash flow hedging relationships for the three months ended June 30, 2017 and 2016 (in millions): Derivative Gain/(Loss) Recognized in Accumulated Other Comprehensive Income (net of tax) Location of Gain/(Loss) Reclassified into Income Gain/(Loss) Reclassified into Earnings Effective Portion (net of tax) Derivative Instrument 2017 2016 (Effective Portion) 2017 2016 Forward exchange contract $ (0.7 ) $ (0.6 ) Net sales $ — $ (0.2 ) Cost of goods sold $ 0.1 $ (0.2 ) The following table summarizes the results of cash flow hedging relationships for the six months ended June 30, 2017 and 2016 (in millions): Derivative Gain/(Loss) Recognized in Accumulated Other Comprehensive Loss (net of tax) Location of Gain/(Loss) Reclassified into Income Gain/(Loss) Reclassified into Earnings Effective Portion (net of tax) Derivative Instrument 2017 2016 (Effective Portion) 2017 2016 Forward exchange contract $ (0.9 ) $ (2.1 ) Net sales $ — $ (0.1 ) Cost of goods sold $ — $ 0.5 Hedge ineffectiveness was immaterial with respect to the forward exchange cash flow hedges during the three and six months ended June 30, 2017 and 2016 .

Restructuring Costs and Other (

Restructuring Costs and Other (Tables)	6 Months Ended
	Jun. 30, 2017
Restructuring and Related Activities [Abstract]
Summary of restructuring costs	The actual costs incurred and total expected cost of our on-going restructuring actions are as follows (in millions): Total expected costs Costs incurred during 2016 Costs incurred during first six months of 2017 Remaining costs at 6/30/2017 2017 Restructuring Actions Electrical Segment $ 6.3 $ — $ 4.9 $ 1.4 Power Segment 3.6 — 1.6 2.0 Total 2017 Restructuring Actions $ 9.9 $ — $ 6.5 $ 3.4 2016 and Prior Restructuring Actions Electrical Segment (a) 41.7 33.9 3.7 4.1 Power Segment 1.7 1.1 — 0.6 Total 2016 and Prior Restructuring Actions $ 43.4 $ 35.0 $ 3.7 $ 4.7 Total Restructuring Actions $ 53.3 $ 35.0 $ 10.2 $ 8.1 (a) Costs incurred in 2016 relating to 2016 Restructuring Actions in the Electrical segment include the $12.5 million previously mentioned charge representing the estimated withdrawal liability from a multi-employer pension plan. Any potential future liability in excess of the amount already recognized in 2016 is not included in the remaining costs at June 30, 2017. Additional information about the estimated withdrawal liability can be found in Note 10 - Retirement Benefits in the Notes to Consolidated Financial Statements in the Hubbell Incorporated Annual Report on Form 10-K for the year ended December 31, 2016 . Pre-tax restructuring costs incurred in each of our segments and the location of the costs in the Condensed Consolidated Statement of Income for the three and six months ended June 30, 2017 and 2016 is as follows (in millions): Three Months Ended June 30, 2017 2016 2017 2016 2017 2016 Cost of goods sold Selling & administrative expense Total Electrical Segment $ 2.5 $ 2.0 $ 1.4 $ 1.4 $ 3.9 $ 3.4 Power Segment 0.7 0.2 0.2 0.1 0.9 0.3 Total Pre-Tax Restructuring Costs $ 3.2 $ 2.2 $ 1.6 $ 1.5 $ 4.8 $ 3.7 Six Months Ended June 30, 2017 2016 2017 2016 2017 2016 Cost of goods sold Selling & administrative expense Total Electrical Segment $ 6.3 $ 3.8 $ 2.3 $ 5.1 $ 8.6 $ 8.9 Power Segment 1.1 0.2 0.5 0.4 1.6 0.6 Total Pre-Tax Restructuring Costs $ 7.4 $ 4.0 $ 2.8 $ 5.5 $ 10.2 $ 9.5
Schedule of restructuring reserve by type of cost	The following table summarizes the accrued liabilities for our restructuring actions (in millions): Beginning Accrued Restructuring Balance 1/1/17 Pre-tax Restructuring Costs Utilization and Foreign Exchange Ending Accrued Restructuring Balance 6/30/2017 2017 Restructuring Actions Severance $ — $ 4.9 $ (1.4 ) $ 3.5 Asset write-downs — — — — Facility closure and other costs — 1.6 (1.5 ) 0.1 Total 2017 Restructuring Actions $ — $ 6.5 $ (2.9 ) $ 3.6 2016 and Prior Restructuring Actions Severance $ 10.4 $ (0.4 ) $ (3.6 ) $ 6.4 Asset write-downs — — — — Facility closure and other costs (a) $ 14.1 $ 4.1 $ (4.4 ) $ 13.8 Total 2016 and Prior Restructuring Actions $ 24.5 $ 3.7 $ (8.0 ) $ 20.2 Total Restructuring Actions $ 24.5 $ 10.2 $ (10.9 ) $ 23.8 (a) Facility closure and other costs as of 1/1/17 includes a charge of approximately $12.5 million to accrue the estimated liability associated with the anticipated withdrawal from a multi-employer pension plan as a result of a restructuring action.

Business Acquisitions - Narrati

Business Acquisitions - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)acquisition	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Goodwill	$ 1,058.7		$ 1,058.7		$ 991
Cash used for acquisitions			108.5	$ 171.6
Power
Business Acquisition [Line Items]
Number of businesses acquired | acquisition		2
Consideration transferred		$ 9.5
Intangible assets		3.4
Goodwill	346.2	$ 4.7	346.2		$ 339
Intangible assets, useful life		13 years
Tax deductible goodwill		$ 2.7
iDevices
Business Acquisition [Line Items]
Consideration transferred	59.2
Intangible assets	9.6		9.6
Goodwill	$ 45.4		45.4
Intangible assets, useful life	12 years
AEC
Business Acquisition [Line Items]
Consideration transferred	$ 31.5
Intangible assets	18.5		18.5
Goodwill	$ 10		$ 10
Intangible assets, useful life	22 years

Business Acquisitions (Details)

Business Acquisitions (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 1,058.7	$ 991
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Tangible assets acquired	21.4
Intangible assets	31.5
Goodwill	60.1
Net deferred taxes	(0.4)
Other liabilities assumed	(12.4)
TOTAL CONSIDERATION, NET OF CASH RECEIVED	$ 100.2

Segment Information (Details)

Segment Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)group	Jun. 30, 2016USD ($)
Segment Reporting Information [Line Items]
Net sales	$ 948.3	$ 908.8	$ 1,800.6	$ 1,743.6
Operating Income	$ 130.6	$ 132.1	$ 234.7	$ 234
Operating Income as a % of Net Sales	13.80%	14.50%	13.00%	13.40%
Electrical
Segment Reporting Information [Line Items]
Number of business groups (in groups) | group			3
Net sales	$ 656.4	$ 641.4	$ 1,243.9	$ 1,224.1
Operating Income	$ 71	$ 77.1	$ 121	$ 132.5
Operating Income as a % of Net Sales	10.80%	12.00%	9.70%	10.80%
Power
Segment Reporting Information [Line Items]
Net sales	$ 291.9	$ 267.4	$ 556.7	$ 519.5
Operating Income	$ 59.6	$ 55	$ 113.7	$ 101.5
Operating Income as a % of Net Sales	20.40%	20.60%	20.40%	19.50%

Inventories, net (Details)

Inventories, net (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Inventory, Net, Items Net of Reserve Alternative [Abstract]
Raw material	$ 180	$ 162.7
Work-in-process	115.5	102.8
Finished goods	350.7	327.9
Inventory, gross	646.2	593.4
Excess of FIFO over LIFO cost basis	(60.9)	(61)
TOTAL	$ 585.3	$ 532.4

Goodwill and Intangible Asset40

Goodwill and Intangible Assets, net - Changes in Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)
Goodwill [Roll Forward]
BALANCE DECEMBER 31, 2016	$ 991
Current year acquisitions (Note 2 – Business Acquisitions)	60.1
Foreign currency translation and prior year acquisitions	7.6
BALANCE JUNE 30, 2017	1,058.7
Electrical
Goodwill [Roll Forward]
BALANCE DECEMBER 31, 2016	652
Current year acquisitions (Note 2 – Business Acquisitions)	55.4
Foreign currency translation and prior year acquisitions	5.1
BALANCE JUNE 30, 2017	712.5
Power
Goodwill [Roll Forward]
BALANCE DECEMBER 31, 2016	339
Current year acquisitions (Note 2 – Business Acquisitions)	4.7
Foreign currency translation and prior year acquisitions	2.5
BALANCE JUNE 30, 2017	$ 346.2

Goodwill and Intangible Asset41

Goodwill and Intangible Assets, net - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 60.1
Amortization expense	17.5	$ 16.5
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,017	17
2,018	32.7
2,019	31.1
2,020	31.2
2,021	30.6
2,022	$ 29.2

Goodwill and Intangible Asset42

Goodwill and Intangible Assets, net - Other Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Other Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 582.8	$ 549.6
Accumulated Amortization	(189.7)	(171.4)
Total intangible assets	636.5	602.9
Tradenames and other
Other Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	53.7	53.3
Patents, tradenames and trademarks
Other Intangible Assets [Line Items]
Finite-lived intangible assets, gross	150.8	143.7
Accumulated Amortization	(47.3)	(43.4)
Customer/agent relationships and other
Other Intangible Assets [Line Items]
Finite-lived intangible assets, gross	432	405.9
Accumulated Amortization	$ (142.4)	$ (128)

Other Accrued Liabilities (Deta

Other Accrued Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Accrued Liabilities [Abstract]
Customer program incentives	$ 28.7	$ 41.2
Accrued income taxes	9	8.4
Deferred revenue	12.1	11.8
Other	100	94.8
TOTAL	$ 149.8	$ 156.2

Other Non-Current Liabilities44

Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Liabilities, Other than Long-term Debt, Noncurrent [Abstract]
Pensions	$ 209.8	$ 208.3
Other post-retirement benefits	24	24
Deferred tax liabilities	44.6	41.2
Other	68	68.2
TOTAL	$ 346.4	$ 341.7

Total Equity I (Details)

Total Equity I (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Common Stock-- authorized 200.0 shares; issued and outstanding 54.7 and 55.5 shares	$ 0.5	$ 0.6
Additional paid-in capital	0	15.4
Retained earnings	1,871.8	1,879.3
Accumulated other comprehensive loss:
Pension and post retirement benefit plan adjustment, net of tax	(176.8)	(180.5)
Cumulative translation adjustment	(101.6)	(120.8)
Unrealized gain on investment, net of tax	(0.7)	(1.2)
Cash flow hedge (loss) gain, net of tax	(0.9)	0
Total Accumulated other comprehensive loss	(280)	(302.5)
Hubbell shareholders’ equity	1,592.3	1,592.8
Noncontrolling interest	10.9	10.4
Total Equity	$ 1,603.2	$ 1,603.2	$ 1,579.4	$ 1,749
Common stock par value per share (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares, issued (in shares)	54,700,000	55,500,000
Common stock, shares, outstanding (in shares)	54,700,000	55,500,000
Retained Earnings
Accumulated other comprehensive loss:
Stock repurchased and retired during period	$ 72.1

Total Equity II (Details)

Total Equity II (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
EQUITY, JANUARY 1			$ 1,603.2	$ 1,749
Total comprehensive income	$ 89.8	$ 70.3	167.2	133
Stock-based compensation			8.1	8.8
Income tax windfall from stock-based awards, net			0	0.9
Repurchase/surrender of shares of common stock			(96)	(240.8)
Issuance of shares related to directors’ deferred compensation, net			0.3	0.3
Dividends to noncontrolling interest			(2.3)	(1.3)
Cash dividends declared			(77.3)	(70.5)
EQUITY, JUNE 30	1,603.2	1,579.4	1,603.2	1,579.4
Hubbell Shareholders’ Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
EQUITY, JANUARY 1			1,592.8	1,740.6
Total comprehensive income			164.4	130.9
Stock-based compensation			8.1	8.8
Income tax windfall from stock-based awards, net			0	0.9
Repurchase/surrender of shares of common stock			(96)	(240.8)
Issuance of shares related to directors’ deferred compensation, net			0.3	0.3
Cash dividends declared			(77.3)	(70.5)
EQUITY, JUNE 30	1,592.3	1,570.2	1,592.3	1,570.2
Noncontrolling interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
EQUITY, JANUARY 1			10.4	8.4
Total comprehensive income			2.8	2.1
Dividends to noncontrolling interest			(2.3)	(1.3)
EQUITY, JUNE 30	$ 10.9	$ 9.2	$ 10.9	$ 9.2

Accumulated Other Comprehensi47

Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
EQUITY, JANUARY 1			$ 1,603.2	$ 1,749
Other comprehensive income (loss) before reclassifications			18.8
Amounts reclassified from accumulated other comprehensive loss	$ 1.9	$ 2.5	3.7	3.7
Current period other comprehensive income (loss)			22.5
EQUITY, JUNE 30	1,603.2	1,579.4	1,603.2	1,579.4
Cash flow hedge loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
EQUITY, JANUARY 1			0
Other comprehensive income (loss) before reclassifications			(0.9)
Amounts reclassified from accumulated other comprehensive loss			0
Current period other comprehensive income (loss)			(0.9)
EQUITY, JUNE 30	(0.9)		(0.9)
Unrealized gain (loss) on available-for- sale securities
Increase (Decrease) in Stockholders' Equity [Roll Forward]
EQUITY, JANUARY 1			(1.2)
Other comprehensive income (loss) before reclassifications			0.5
Amounts reclassified from accumulated other comprehensive loss			0
Current period other comprehensive income (loss)			0.5
EQUITY, JUNE 30	(0.7)		(0.7)
Pension and post retirement benefit plan adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
EQUITY, JANUARY 1			(180.5)
Other comprehensive income (loss) before reclassifications			0
Amounts reclassified from accumulated other comprehensive loss	2	$ 2.1	3.7	$ 4.1
Current period other comprehensive income (loss)			3.7
EQUITY, JUNE 30	(176.8)		(176.8)
Cumulative translation adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
EQUITY, JANUARY 1			(120.8)
Other comprehensive income (loss) before reclassifications			19.2
Amounts reclassified from accumulated other comprehensive loss			0
Current period other comprehensive income (loss)			19.2
EQUITY, JUNE 30	(101.6)		(101.6)
AOCI Including Portion Attributable to Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
EQUITY, JANUARY 1			(302.5)
EQUITY, JUNE 30	$ (280)		$ (280)

Accumulated Other Comprehensi48

Accumulated Other Comprehensive Loss - Reclassifications (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax [Abstract]
Net sales	$ 948.3	$ 908.8	$ 1,800.6	$ 1,743.6
Cost of goods sold	(653.6)	(615.3)	(1,244.1)	(1,190.2)
Income before income taxes	116.7	116.8	207.6	208.4
Tax (expense) benefit	(35.9)	(34.8)	(62.9)	(64.4)
(Loss) gain net of tax	(1.9)	(2.5)	(3.7)	(3.7)
Cash flow hedge loss
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax [Abstract]
(Loss) gain net of tax			0
Amortization of prior-service costs
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax [Abstract]
Reclassification from accumulated other comprehensive income, before tax	0.2	0.2	0.4	0.4
Amortization of actuarial gains/(losses)
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax [Abstract]
Reclassification from accumulated other comprehensive income, before tax	(2.7)	(3.5)	(5.5)	(7)
Settlement and curtailment losses
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax [Abstract]
Reclassification from accumulated other comprehensive income, before tax	(0.5)	0	(0.5)	0
Pension and post retirement benefit plan adjustment
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax [Abstract]
Reclassification from accumulated other comprehensive income, before tax	(3)	(3.3)	(5.6)	(6.6)
Reclassification from AOCI, current period, tax	1	1.2	1.9	2.5
(Loss) gain net of tax	(2)	(2.1)	(3.7)	(4.1)
Forward Contracts | Cash flow hedge loss | Reclassification out of Accumulated Other Comprehensive Income
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax [Abstract]
Net sales	0	(0.3)	0	(0.2)
Cost of goods sold	0.1	(0.3)	0	0.7
Income before income taxes	0.1	(0.6)	0	0.5
Tax (expense) benefit	0	0.2	0	(0.1)
Gain (loss) net of tax	$ 0.1	$ (0.4)	$ 0	$ 0.4

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net income attributable to Hubbell	$ 79.1	$ 81	$ 141.9	$ 141.9
Less: Earnings allocated to participating securities	(0.3)	(0.2)	(0.5)	(0.4)
Net income available to common shareholders	$ 78.8	$ 80.8	$ 141.4	$ 141.5
Denominator [Abstract]
Average number of common shares outstanding (in shares)	54.8	55.3	55	55.8
Potential dilutive common shares (in shares)	0.3	0.3	0.3	0.2
Average number of diluted shares outstanding (in shares)	55.1	55.6	55.3	56
Basic (USD per share)	$ 1.44	$ 1.46	$ 2.57	$ 2.54
Diluted (USD per share)	$ 1.43	$ 1.45	$ 2.56	$ 2.53

Pension and Other Benefits (Det

Pension and Other Benefits (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1.5	$ 3.5	$ 3	$ 7
Interest cost	9.3	10.5	18.5	21
Expected return on plan assets	(8.5)	(11)	(17)	(22)
Amortization of prior service cost	0	0	0	0
Amortization of actuarial losses	2.7	3.5	5.5	7
Settlement and curtailment losses	0.5	0	0.5	0
NET PERIODIC BENEFIT COST	5.5	6.5	10.5	13
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	0.3	0.3	0.4	0.6
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	(0.2)	(0.2)	(0.4)	(0.4)
Amortization of actuarial losses	0	0	0	0
Settlement and curtailment losses	0	0	0	0
NET PERIODIC BENEFIT COST	$ 0.1	$ 0.1	$ 0	$ 0.2

Pension and Other Benefits - Na

Pension and Other Benefits - Narrative (Details) - Foreign Plan $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan estimated total employer contributions in current fiscal year	$ 1.7
Contributions by employer	$ 0.9

Guarantees (Details)

Guarantees (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Movement in Standard Product Warranty Accrual [Roll Forward]
BALANCE AT JANUARY 1,	$ 13.2	$ 13.2
Provision	6.6	5
Expenditures/other	(3.8)	(4.8)
BALANCE AT JUNE 30,	$ 16	$ 13.4

Fair Value Measurement - Narrat

Fair Value Measurement - Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017USD ($)contract	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale investments	$ 58.2		$ 57.4
Trading securities	12.7		10.2
Purchase of trading securities related to deferred compensation plans	1.9	$ 1.2
Proceeds from securities sold	$ 0.3	$ 1.1
Number of foreign exchange contracts held (in contracts) | contract	55
Long-term debt, fair value	$ 1,024.3		1,017.8
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale investments	0		0
Trading securities	12.7		$ 10.2
Forward exchange contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, notional amount	$ 40.4

Fair Value Measurement - Financ

Fair Value Measurement - Financial Assets and Liabilities by Hierarchy Level (Details) - USD ($) $ in Millions		Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	[1]	$ 221.4	$ 263.5
Available for sale investments		58.2	57.4
Trading securities		12.7	10.2
Deferred compensation plan liabilities		(12.7)	(10.2)
Derivatives:
Forward exchange contracts-Assets	[2]	0	0.8
Forward exchange contracts-(Liabilities)	[3]	(0.7)	(0.1)
TOTAL		278.9	321.6
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	[1]	221.4	263.5
Available for sale investments		0	0
Trading securities		12.7	10.2
Deferred compensation plan liabilities		(12.7)	(10.2)
Derivatives:
Forward exchange contracts-Assets	[2]	0	0
Forward exchange contracts-(Liabilities)	[3]	0	0
TOTAL		221.4	263.5
Quoted Prices in Active Markets for Similar Assets (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	[1]	0	0
Available for sale investments		54.2	53.6
Trading securities		0	0
Deferred compensation plan liabilities		0	0
Derivatives:
Forward exchange contracts-Assets	[2]	0	0.8
Forward exchange contracts-(Liabilities)	[3]	(0.7)	(0.1)
TOTAL		53.5	54.3
Unobservable inputs for which little or no market data exists (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	[1]	0	0
Available for sale investments		4	3.8
Trading securities		0	0
Deferred compensation plan liabilities		0	0
Derivatives:
Forward exchange contracts-Assets	[2]	0	0
Forward exchange contracts-(Liabilities)	[3]	0	0
TOTAL		$ 4	$ 3.8
[1]	(a) Money market funds are reflected in Cash and cash equivalents in the Condensed Consolidated Balance Sheet.
[2]	(b) Forward exchange contracts-Assets are reflected in Other current assets in the Condensed Consolidated Balance Sheet.
[3]	(c) Forward exchange contracts-(Liabilities) are reflected in Other accrued liabilities in the Condensed Consolidated Balance Sheet.

Fair Value Measurement - Cash F

Fair Value Measurement - Cash Flow Hedging Relationships (Details) - Forward exchange contract - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Gain/(Loss) Recognized in Accumulated Other Comprehensive Income (net of tax)	$ (0.7)	$ (0.6)	$ (0.9)	$ (2.1)
Net sales
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain/(Loss) Reclassified into Earnings Effective Portion (net of tax)	0	(0.2)	0	(0.1)
Cost of goods sold
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain/(Loss) Reclassified into Earnings Effective Portion (net of tax)	$ 0.1	$ (0.2)	$ 0	$ 0.5

Restructuring Costs and Other -

Restructuring Costs and Other - By Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 4.8	$ 3.7	$ 10.2	$ 9.5
Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3.2	2.2	7.4	4
Selling & administrative expense
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1.6	1.5	2.8	5.5
Electrical
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3.9	3.4	8.6	8.9
Electrical | Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2.5	2	6.3	3.8
Electrical | Selling & administrative expense
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1.4	1.4	2.3	5.1
Power
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.9	0.3	1.6	0.6
Power | Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.7	0.2	1.1	0.2
Power | Selling & administrative expense
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0.2	$ 0.1	$ 0.5	$ 0.4

Restructuring Costs and Other57

Restructuring Costs and Other - Reserve (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/17				$ 24.5
Pre-tax Restructuring Costs		$ 4.8	$ 3.7	10.2	$ 9.5
Utilization and Foreign Exchange				(10.9)
Ending Accrued Restructuring Balance 6/30/2017		23.8		23.8
2017 Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/17				0
Pre-tax Restructuring Costs				6.5
Utilization and Foreign Exchange				(2.9)
Ending Accrued Restructuring Balance 6/30/2017		3.6		3.6
2017 Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/17				0
Pre-tax Restructuring Costs				4.9
Utilization and Foreign Exchange				(1.4)
Ending Accrued Restructuring Balance 6/30/2017		3.5		3.5
2017 Restructuring Actions | Asset write-downs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/17				0
Pre-tax Restructuring Costs				0
Utilization and Foreign Exchange				0
Ending Accrued Restructuring Balance 6/30/2017		0		0
2017 Restructuring Actions | Facility closure and other costs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/17				0
Pre-tax Restructuring Costs				1.6
Utilization and Foreign Exchange				(1.5)
Ending Accrued Restructuring Balance 6/30/2017		0.1		0.1
2016 and Prior Restructuring Actions
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/17				24.5
Pre-tax Restructuring Costs				3.7
Utilization and Foreign Exchange				(8)
Ending Accrued Restructuring Balance 6/30/2017		20.2		20.2
2016 and Prior Restructuring Actions | Severance
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/17				10.4
Pre-tax Restructuring Costs				(0.4)
Utilization and Foreign Exchange				(3.6)
Ending Accrued Restructuring Balance 6/30/2017		6.4		6.4
2016 and Prior Restructuring Actions | Asset write-downs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/17				0
Pre-tax Restructuring Costs				0
Utilization and Foreign Exchange				0
Ending Accrued Restructuring Balance 6/30/2017		0		0
2016 and Prior Restructuring Actions | Facility closure and other costs
Restructuring Reserve [Roll Forward]
Beginning Accrued Restructuring Balance 1/1/17	[1]			14.1
Pre-tax Restructuring Costs	[1]			4.1
Utilization and Foreign Exchange	[1]			(4.4)
Ending Accrued Restructuring Balance 6/30/2017	[1]	$ 13.8		$ 13.8
[1]	(a) Facility closure and other costs as of 1/1/17 includes a charge of approximately $12.5 million to accrue the estimated liability associated with the anticipated withdrawal from a multi-employer pension plan as a result of a restructuring action.

Restructuring Costs and Other58

Restructuring Costs and Other - Summary of Costs (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Total expected costs	$ 53.3			$ 53.3
Costs incurred				10.2		$ 35
Remaining costs at 6/30/2017	8.1			8.1
Restructuring charges	4.8		$ 3.7	10.2	$ 9.5
Electrical
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3.9		3.4	8.6	8.9
Power
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.9		$ 0.3	1.6	$ 0.6
2017 Restructuring Actions
Restructuring Cost and Reserve [Line Items]
Total expected costs	9.9			9.9
Costs incurred				6.5		0
Remaining costs at 6/30/2017	3.4			3.4
Restructuring charges				6.5
2017 Restructuring Actions | Electrical
Restructuring Cost and Reserve [Line Items]
Total expected costs	6.3			6.3
Costs incurred				4.9		0
Remaining costs at 6/30/2017	1.4			1.4
2017 Restructuring Actions | Power
Restructuring Cost and Reserve [Line Items]
Total expected costs	3.6			3.6
Costs incurred				1.6		0
Remaining costs at 6/30/2017	2			2
2016 and Prior Restructuring Actions
Restructuring Cost and Reserve [Line Items]
Total expected costs	43.4			43.4
Costs incurred				3.7		35
Remaining costs at 6/30/2017	4.7			4.7
Restructuring charges				3.7
2016 and Prior Restructuring Actions | Electrical
Restructuring Cost and Reserve [Line Items]
Total expected costs	41.7			41.7
Costs incurred				3.7		33.9
Remaining costs at 6/30/2017	4.1			4.1
2016 and Prior Restructuring Actions | Power
Restructuring Cost and Reserve [Line Items]
Total expected costs	1.7			1.7
Costs incurred				0		$ 1.1
Remaining costs at 6/30/2017	$ 0.6			$ 0.6
Withdrawal from Multiemployer Defined Benefit Plan | 2017 Restructuring Actions
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 12.5
Withdrawal from Multiemployer Defined Benefit Plan | 2017 Restructuring Actions | Electrical
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 12.5

Restructuring Costs and Other R

Restructuring Costs and Other Restructuring Costs and Other - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 4.8		$ 3.7	$ 10.2	$ 9.5
Multiemployer plans, withdrawal obligation, settlement term		19 years
Restructuring Actions 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 6.5
Withdrawal from Multiemployer Defined Benefit Plan | Restructuring Actions 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 12.5