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Adoption of IFRS 15 - Revenue by Services and Products (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | $ 23,468 | $ 22,757
Total services |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | 20,441 | 20,095
Wireless |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | 6,258 | 6,048
Data |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | 7,466 | 7,192
Voice |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | 3,793 | 3,968
Media |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | 2,677 | 2,676
Other services |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | 247 | 211
Total products |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | 3,027 | 2,662
Wireless |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | 2,114 | 1,833
Data |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | 466 | 410
Equipment and other |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues | $ 447 | 419
2017 as previously reported | IFRS 15 |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 22,719
2017 as previously reported | IFRS 15 | Total services |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 21,143
2017 as previously reported | IFRS 15 | Wireless |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 7,308
2017 as previously reported | IFRS 15 | Data |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 7,146
2017 as previously reported | IFRS 15 | Voice |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 3,800
2017 as previously reported | IFRS 15 | Media |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 2,676
2017 as previously reported | IFRS 15 | Other services |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 213
2017 as previously reported | IFRS 15 | Total products |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 1,576
2017 as previously reported | IFRS 15 | Wireless |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 530
2017 as previously reported | IFRS 15 | Data |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 519
2017 as previously reported | IFRS 15 | Equipment and other |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 527
IFRS 15 impacts | IFRS 15 |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 38
IFRS 15 impacts | IFRS 15 | Total services |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | (1,264)
IFRS 15 impacts | IFRS 15 | Wireless |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | (1,260)
IFRS 15 impacts | IFRS 15 | Data |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | (5)
IFRS 15 impacts | IFRS 15 | Voice |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 3
IFRS 15 impacts | IFRS 15 | Media |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 0
IFRS 15 impacts | IFRS 15 | Other services |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | (2)
IFRS 15 impacts | IFRS 15 | Total products |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 1,302
IFRS 15 impacts | IFRS 15 | Wireless |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 1,303
IFRS 15 impacts | IFRS 15 | Data |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 1
IFRS 15 impacts | IFRS 15 | Equipment and other |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | (2)
Other | IFRS 15 |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 0
Other | IFRS 15 | Total services |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 216
Other | IFRS 15 | Wireless |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 0
Other | IFRS 15 | Data |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 51
Other | IFRS 15 | Voice |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 165
Other | IFRS 15 | Media |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 0
Other | IFRS 15 | Other services |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 0
Other | IFRS 15 | Total products |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | (216)
Other | IFRS 15 | Wireless |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | 0
Other | IFRS 15 | Data |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | (110)
Other | IFRS 15 | Equipment and other |  |
Disclosure of initial application of standards or interpretations [line items] |  |
Total operating revenues |  | $ (106)

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- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2018-01-01 -Paragraph 113 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_113_a&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2018-01-01 -Paragraph 114 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_114&doctype=Standard -URIDate 2018-03-16 + Details
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