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Intangible Assets, Net - Assumptions used in fair value calculations of goodwill and intangible assets (Details)	Dec. 31, 2017	Dec. 31, 2016
Minimum | Other Businesses
Intangible Assets, Net
Long-term growth rate (as a percentage)	2.30%	3.20%
Discount rate (as a percentage)	12.30%	12.70%
Minimum | Cable
Intangible Assets, Net
Long-term growth rate (as a percentage)	2.40%	2.90%
Discount rate (as a percentage)	10.00%	9.60%
Maximum | Other Businesses
Intangible Assets, Net
Long-term growth rate (as a percentage)	3.70%	4.70%
Discount rate (as a percentage)	14.80%	17.30%
Maximum | Cable
Intangible Assets, Net
Long-term growth rate (as a percentage)	2.40%	2.90%
Discount rate (as a percentage)	12.50%	11.60%

X

- Definition

The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Cash-generating units [member]]

+ References

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- Definition

The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Cash-generating units [member]]

+ References

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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