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Other intangible assets, net (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Schedule Of Other Intangible Assets By Major Class [Line Items] |  |  |
Amortization expense of other intangible assets | $ 97,900,000 | $ 83,700,000 | $ 66,800,000
Future Amortization Expense, Year One | 93,300,000 |  |
Future Amortization Expense, Year Two | 90,300,000 |  |
Future Amortization Expense, Year Three | 82,600,000 |  |
Future Amortization Expense, Year Four | 68,800,000 |  |
Future Amortization Expense, Year Five | 66,000,000 |  |
Customer Relationships [Member] |  |  |
Schedule Of Other Intangible Assets By Major Class [Line Items] |  |  |
Cost | 1,022,134,000 | 960,013,000 |
Accumulated Amortization | (302,156,000) | (235,885,000) |
Net Book Value | 719,978,000 | 724,128,000 |
Unpatented Technology [Member] |  |  |
Schedule Of Other Intangible Assets By Major Class [Line Items] |  |  |
Cost | 193,915,000 | 175,819,000 |
Accumulated Amortization | (72,358,000) | (54,376,000) |
Net Book Value | 121,557,000 | 121,443,000 |
Software [Member] |  |  |
Schedule Of Other Intangible Assets By Major Class [Line Items] |  |  |
Cost | 49,395,000 | 49,095,000 |
Accumulated Amortization | (35,833,000) | (30,182,000) |
Net Book Value | 13,562,000 | 18,913,000 |
Patents and other protective rights [Member] |  |  |
Schedule Of Other Intangible Assets By Major Class [Line Items] |  |  |
Cost | 25,398,000 | 25,505,000 |
Accumulated Amortization | (17,699,000) | (15,292,000) |
Net Book Value | 7,699,000 | 10,213,000 |
Trade secrets [Member] |  |  |
Schedule Of Other Intangible Assets By Major Class [Line Items] |  |  |
Cost | 1,500,000 | 1,604,000 |
Accumulated Amortization | (1,361,000) | (1,174,000) |
Net Book Value | 139,000 | 430,000 |
Trade Names [Member] |  |  |
Schedule Of Other Intangible Assets By Major Class [Line Items] |  |  |
Cost | 231,207,000 | 229,386,000 |
Accumulated Amortization | 0 | 0 |
Net Book Value | $ 231,207,000 | $ 229,386,000 |

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- Definition The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) + Details
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- Definition Aggregate amount of amortization expense recognized for intangible asset during the period. A recognized intangible asset shall be amortized over its estimated useful life to the reporting entity unless that life is determined to be indefinite. If an intangible asset has a finite useful life, but the precise length of that life is not known, that intangible asset shall be amortized over the best estimate of its useful life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) + Details
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- Definition Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) + Details
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- Definition The aggregate sum of gross carrying value of a major finite-lived intangible asset class, less accumulated amortization and any impairment charges. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) + Details
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