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Summary of Accounting Policies (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) ReportingUnit shares | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($) shares
Accounts Receivable [Abstract] |  |  |
Allowance for doubtful accounts and sales allowances | $ 14,500 | $ 12,400 |
Earnings per share [Abstract] |  |  |
Basic weighted-average shares outstanding (in shares) | shares | 101,291,000 | 100,616,000 | 99,916,000
Effect of potential common stock [Abstract] |  |  |
Common stock awards (in shares) | shares | 1,126,000 | 887,000 | 816,000
Senior subordinated convertible notes (in shares) | shares | 47,000 | 94,000 | 152,000
Diluted shares outstanding (in shares) | shares | 102,464,000 | 101,597,000 | 100,884,000
Antidilutive stock options (in shares) | shares | 1,144,350 | 618,220 | 764,333
Foreign Currency Translation and Transactions [Abstract] |  |  |
Foreign currency translation gain (loss) before tax | $ (2,900) | $ (700) | $ 200
Goodwill and Other Intangibles [Abstract] |  |  |
Number of reporting units | ReportingUnit | 33 |  |
Minimum carrying value of goodwill | $ 0 |  |
Maximum carrying value of goodwill | 2,200,000 |  |
Income Taxes [Abstract] |  |  |
The approximate amount of earnings of foreign subsidiaries | 1,370,000 |  |
New Accounting Pronouncement, Early Adoption [Line Items] |  |  |
Tax benefit | 282,007 | 306,278 | 275,423
Research and Development [Abstract] |  |  |
Research and development costs | 195,400 | 164,200 | 147,900
Deferred Revenue [Abstract] |  |  |
Contract revenue recognized under the percentage-of-completion method | 241,000 | 253,000 | $ 266,000
Capitalized Software [Abstract] |  |  |
Capitalized software | $ 4,400 | $ 4,600 |
Buildings [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 20 years |  |
Buildings [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 30 years |  |
Machinery and equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 8 years |  |
Machinery and equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 12 years |  |
Office Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 3 years |  |
Office Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life | 5 years |  |
Adjustments for New Accounting Principle, Early Adoption [Member] |  |  |
New Accounting Pronouncement, Early Adoption [Line Items] |  |  |
Tax benefit | $ 15,300 |  |
Increase in diluted weighted average common shares outstanding (in shares) | shares | 278,829 |  |

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