Details of Certain Consolidated Balance Sheet Captions (Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Details of Certain Consolidated Balance Sheet Captions [Abstract]
Wages, compensation and other benefits	$ 226,488	$ 238,238
Commissions and royalties	34,194	38,609
Customer advance payments	303,527us-gaap_CustomerAdvancesCurrent	340,136us-gaap_CustomerAdvancesCurrent
Progress billings in excess of accumulated costs	22,098us-gaap_BillingsInExcessOfCostCurrent	40,718us-gaap_BillingsInExcessOfCostCurrent
Warranty costs and late delivery penalties	47,738	63,935
Sales and use tax	16,274us-gaap_SalesAndExciseTaxPayableCurrent	15,508us-gaap_SalesAndExciseTaxPayableCurrent
Income tax	37,451us-gaap_AccruedIncomeTaxesCurrent	21,939us-gaap_AccruedIncomeTaxesCurrent
Other	106,302us-gaap_OtherLiabilitiesCurrent	101,927us-gaap_OtherLiabilitiesCurrent
Accrued liabilities	$ 794,072us-gaap_AccruedLiabilitiesCurrent	$ 861,010us-gaap_AccruedLiabilitiesCurrent
Other accrued liabilities maximum percentage of current liabilities	5.00%

Concentration risk, accrued liabilities, maximum

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Warranty costs and late delivery penalties, current

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Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations.

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties.

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Liability attributable to (i) billings in excess of costs under the percentage of completion contract accounting method representing the difference between contractually invoiced amounts (billings) and revenue recognized based, for example, on costs incurred to estimated total costs at period end or (ii) contractually invoiced amounts (billings) in excess of costs incurred and accumulated under the completed contract accounting method that are expected to be realized within one year or one operating cycle, whichever is longer, from the reporting date.

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The current portion of prepayments received from customers for goods or services to be provided in the future.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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Carrying value as of the balance sheet date of liabilities incurred through that date and payable for statutory sales and use taxes, including value added tax. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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