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Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Significant Accounting Policies [Line Items] |  |  |  |
Other current assets related to contracts | $ 168,691,000 | $ 326,108,000 | $ 168,691,000 |
Other current liabilities related to these contracts | 166,470,000 | 333,224,000 | 166,470,000 |
Research and development |  | 93,557,000 | 78,158,000 | 67,156,000
Goodwill planning period |  | 5 years |  |
Perpetual growth rate |  | 3.00% |  |
Pre-tax non-cash Impairment charge on goodwill | 200,500,000 |  |  |
Goodwill and intangible assets |  | 6,804,200,000 |  |
Investments in and loans to equity method investees | 6,000,000 | 10,300,000 | 6,000,000 |
Aggregate balance of investments under cost method | 6,900,000 | 6,900,000 | 6,900,000 |
Reserves for policy claims | 44,300,000 | 42,900,000 | 44,300,000 |
Liability due to product recall |  |  |  | 3,200,000
Liability due to product recall, net of tax |  |  |  | 2,000,000
Lincoln Industrial |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Escrow balances from our sale of Lincoln Industrial |  |  |  | 500,000
Tax reserves reversed due to the expiration of various statues of limitations |  |  |  | 1,000,000
Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Equity method investment, ownership percentage |  | 20.00% |  |
Discounted cash flows discount rate |  | 12.00% |  |
Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Equity method investment, ownership percentage |  | 50.00% |  |
Discounted cash flows discount rate |  | 13.00% |  |
Percentage of recognized income tax positions that could be realized at the largest amount |  | 50.00% |  |
Other Current Liabilities |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Reserves for policy claims | 13,300,000 | 13,300,000 | 13,300,000 |
Other Noncurrent Liabilities |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Reserves for policy claims | 31,000,000 | 29,600,000 | 31,000,000 |
Credit Concentration Risk |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of customers | 0 | 0 | 0 |
Credit Concentration Risk | Maximum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Customer receivable balances to total trade receivables |  | 10.00% | 10.00% |
Contract based |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Other current assets related to contracts | 54,700,000 | 124,400,000 | 54,700,000 |
Other current liabilities related to these contracts | 17,700,000 | 61,100,000 | 17,700,000 |
Water & Fluid Solutions |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Pre-tax non-cash Impairment charge on goodwill |  | 200,500,000 | 200,500,000 |
Impairment charges, related to trade names |  | 49,100,000 | 0 | 0
Water & Fluid Solutions | Trade names intangibles |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Impairment charges, related to trade names |  | $ 60,700,000 |  |
Goodwill and identifiable intangible assets |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Percentage of total assets |  | 58.00% |  |

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant