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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2021
Accounting Policies [Abstract] |
Calculation Of Basic And Diluted Earnings Per Share | The calculations of basic and diluted earnings per share for the three and nine months ended September 30, 2021 and 2020 are:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Net income | $ | 138,045 |  |  | $ | 111,096 |  |  | $ | 401,293 |  |  | $ | 321,404 |
Shares used to compute basic earnings per common share | 140,507,000 |  |  | 145,812,000 |  |  | 141,928,000 |  |  | 147,586,000 |
Dilutive effect of stock options | 1,919,000 |  |  | 2,095,000 |  |  | 2,053,000 |  |  | 2,372,000 |
Shares used to compute diluted earnings per common share | 142,426,000 |  |  | 147,907,000 |  |  | 143,981,000 |  |  | 149,958,000 |
Basic earnings per common share | $ | 0.98 |  |  | $ | 0.76 |  |  | $ | 2.83 |  |  | $ | 2.18 |
Diluted earnings per common share | $ | 0.97 |  |  | $ | 0.75 |  |  | $ | 2.79 |  |  | $ | 2.14 |
Adjustments To Reconcile Net Income To Net Cash Provided By Operating Activities | The following table provides the details of the adjustments to reconcile net income to net cash provided by operating activities for the nine months ended September 30:
| 2021 |  | 2020
Net income | $ | 401,293 |  |  | $ | 321,404 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 25,141 |  |  | 23,058 |
Amortization | 43,749 |  |  | 39,417 |
Equity in earnings of unconsolidated affiliate | (103,420) |  |  | (86,488) |
Distributions received from unconsolidated affiliate | 110,559 |  |  | 107,180 |
Stock-based compensation | 31,173 |  |  | 20,458 |
Provision for losses on receivables | 1,569 |  |  | 109 |
Deferred income tax expense | (6,639) |  |  | (7,731) |
Net (gain) loss from investments | (134) |  |  | 1,310 |
Change in other long-term liabilities | 2,103 |  |  | (4,442) |
Change in other assets | 314 |  |  | (965) |
Contract costs capitalized, net of amortization | (482) |  |  | (2,842) |
Other | 921 |  |  | (1,053) |
Change in current assets and liabilities |  |  |
(Increase) decrease in |  |  |
Receivables from investment products | (4,537) |  |  | 2,521 |
Receivables | (58,537) |  |  | (37,921) |
Other current assets | (3,919) |  |  | (6,186) |
Advances due from unconsolidated affiliate | 51,422 |  |  | 12,641 |
(Decrease) increase in |  |  |
Accounts payable | 3,006 |  |  | 8,615 |
Accrued liabilities | (9,851) |  |  | 8,809 |
Deferred revenue | 150 |  |  | (1,370) |
Total adjustments | 82,588 |  |  | 75,120 |
Net cash provided by operating activities | $ | 483,881 |  |  | $ | 396,524 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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