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BASIS OF PREPARATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES. (Property and equipment) (Details) | 12 Months Ended
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Dec. 31, 2019
Computer and communications software and equipment |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 3 years
Buildings and improvements |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 32 years
Leasehold improvements |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 8 years
Furniture and other equipment |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 6 years
Leased land |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 99 years

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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Namespace Prefix: |
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