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Stockholders' Equity - Additional Information (Detail) - USD ($) |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Feb. 24, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Jun. 30, 2015 | Nov. 30, 2014 | Apr. 30, 2014
Class of Stock [Line Items] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax |  | $ (92,000,000) | $ (88,800,000) | $ (79,500,000) |  |  |
Common stock, shares authorized |  | 90,000,000 | 90,000,000 |  |  |  |
Common stock, par value (usd per share) |  | $ 1 | $ 1 |  |  |  |
Common stock, shares issued |  | 65,400,000 | 64,800,000 |  |  |  |
Common stock, shares outstanding |  | 59,600,000 | 62,200,000 |  |  |  |
Preference stock, shares authorized |  | 800,000 |  |  |  |  |
Preference stock, par value (usd per share) |  | $ 1 |  |  |  |  |
Cash dividends declared per common share (usd per share) |  | $ 0.28 | $ 0.25 | $ 0.09 |  |  |
Authorized amount |  |  |  |  | $ 15,000,000 |  | $ 15,000,000
Shares acquired |  |  | 724,792 | 696,263 |  |  |
Stock repurchase program, amount acquired |  | $ 37,800,000 | $ 10,600,000 | $ 10,300,000 |  |  |
Cash dividends paid to stockholders |  | 16,900,000 | 15,600,000 | 5,600,000 |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Cash dividends declared per common share (usd per share) | $ 0.07 |  |  |  |  |  |
Foreign Currency Translation [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax |  | (13,000,000) | $ (13,300,000) | $ 200,000 |  |  |
Fire Rescue [Member] | Foreign Currency Translation [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax |  | $ (7,400,000) |  |  |  |  |
November 2014 Repurchase Program [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Authorized amount |  |  |  |  |  | $ 75,000,000 |
Shares acquired |  | 2,961,007 |  |  |  |  |
Stock repurchase program, amount acquired |  | $ 37,800,000 |  |  |  |  |

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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