Goodwill - Key Assumptions Used to Estimate the Recoverable Amounts (Details)	Dec. 31, 2018
Bell Wireless
Disclosure of information for cash-generating units [line items]
Perpetuity Growth Rate (as a percent)	0.80%
Discount Rate (as a percent)	9.10%
Bell Wireline
Disclosure of information for cash-generating units [line items]
Perpetuity Growth Rate (as a percent)	1.00%
Discount Rate (as a percent)	6.00%
Bell Media
Disclosure of information for cash-generating units [line items]
Perpetuity Growth Rate (as a percent)	1.00%
Discount Rate (as a percent)	8.50%

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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