| Component: (Network and Table) | |
|---|---|
| Network | 00500 - Statement - Consolidated Statements of Cash Flows (http://www.unither.com/role/StatementConsolidatedStatementsOfCashFlows)  | 
| Table | (Implied) | 
| Reporting Entity [Axis] | 0001082554 (http://www.sec.gov/CIK) | 
| Consolidated Statements of Cash Flows | Period [Axis] | ||
|---|---|---|---|
2016-01-01 - 2016-12-31  | 2015-01-01 - 2015-12-31  | 2014-01-01 - 2014-12-31  | |
Consolidated Statements of Cash Flows  | |||
Cash flows from operating activities:  | |||
Net income  | 713,700,000    | 651,600,000    | 340,100,000    | 
Adjustments to reconcile net income to net cash provided by operating activities:  | |||
Depreciation and amortization  | |||
Share-based compensation expense  | |||
Gain on sale of intangible asset  | (350,000,000)   | ||
Other  | |||
Excess tax benefits from share-based compensation  | (  | (  | (  | 
Changes in operating assets and liabilities:  | |||
Accounts receivable  | (  | (  | (  | 
Inventories  | (  | (  | (  | 
Accounts payable and accrued expenses  | (  | ||
Other assets and liabilities  | (  | (  | (  | 
Net cash provided by operating activities  | |||
Cash flows from investing activities:  | |||
Purchases of property, plant and equipment  | (  | (  | (  | 
Purchases of held-to-maturity investments  | (  | (  | (  | 
Maturities of held-to-maturity investments  | |||
Gain on sale of intangible asset  | |||
Purchase of investments held at cost  | (  | (  | (  | 
Purchase of investments under the equity method  | (  | ||
Intangible assets acquired, net  | (  | ||
Net cash provided by investing activities  | |||
Cash flows from financing activities:  | |||
Principal payments of debt  | (  | (  | (  | 
Payments of debt issuance costs  | (  | ||
Payments to repurchase common stock  | (  | (  | (  | 
Proceeds from line of credit  | |||
Payments on line of credit  | (  | ||
Proceeds from exercise of stock options  | |||
Issuance of stock under employee stock purchase plan  | |||
Excess tax benefits from share-based compensation  | |||
Net cash used in financing activities  | (  | (  | (  | 
Effect of exchange rate changes on cash and cash equivalents  | (  | (  | (  | 
Net increase in cash and cash equivalents  | |||
Cash and cash equivalents, beginning of year  | 831,800,000    | ||
Cash and cash equivalents, end of year  | 1,023,000,000    | 831,800,000    | 397,700,000    | 
Supplemental cash flow information:  | |||
Cash paid for interest  | |||
Cash paid for income taxes  | |||
Non-cash investing and financing activities:  | |||
Acquisitions-non-cash consideration  | |||
Non-cash additions to property, plant and equipment  | |||
Issuance of common stock upon conversion of convertible notes  | |||