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CONSOLIDATED STATEMENT OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash flows from operating activities attributable to continuing operations:    
Net earnings $ 109,237 $ 78,297
Less: loss from discontinued operations, net of tax (2,012) (957)
Earnings from continuing operations 111,249 79,254
Adjustments to reconcile earnings from continuing operations to net cash provided by operating activities attributable to continuing operations:    
Non-cash compensation expense 24,483 41,907
Depreciation 31,052 24,340
Amortization of intangibles 32,215 12,846
Excess tax benefits from stock-based awards (23,547) (14,353)
Deferred income taxes (6,737) 819
Equity in losses of unconsolidated affiliates 1,169 24,910
Acquisition-related contingent consideration fair value adjustment 5,707 0
Changes in assets and liabilities, net of effects of acquisitions:    
Accounts receivable (9,754) (19,382)
Other current assets (14,789) (7,937)
Accounts payable and other current liabilities 23,438 3,013
Income taxes payable 45,529 44,793
Deferred revenue (203) 8,679
Other, net 8,451 6,638
Net cash provided by operating activities attributable to continuing operations 228,263 205,527
Cash flows from investing activities attributable to continuing operations:    
Acquisitions, net of cash acquired (36,913) (20,411)
Capital expenditures (47,819) (20,353)
Proceeds from maturities and sales of marketable debt securities 12,502 39,000
Purchases of marketable debt securities 0 (24,254)
Proceeds from sales of long-term investments 310 12,527
Purchases of long-term investments (25,259) (6,244)
Other, net (1,443) (12,603)
Net cash used in investing activities attributable to continuing operations (98,622) (32,338)
Cash flows from financing activities attributable to continuing operations:    
Purchase of treasury stock (162,660) (359,231)
Net (payments) proceeds from stock-based award activities (868) 301,677
Dividends (38,880) (21,697)
Excess tax benefits from stock-based awards 23,547 14,353
Principal payments on long-term debt (15,844) 0
Other, net (3,634) (2,842)
Net cash used in financing activities attributable to continuing operations (198,339) (67,740)
Total cash (used in) provided by continuing operations (68,698) 105,449
Total cash provided by (used in) discontinued operations 2,335 (729)
Effect of exchange rate changes on cash and cash equivalents (4,889) (1,677)
Net (decrease) increase in cash and cash equivalents (71,252) 103,043
Cash and cash equivalents at beginning of period 749,977 704,153
Cash and cash equivalents at end of period $ 678,725 $ 807,196