Goodwill (Details) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2019
USD ($)
|
Jun. 30, 2018
USD ($)
|
Jun. 30, 2019
USD ($)
reporting_unit
|
Jun. 30, 2018
USD ($)
|
|
| Business Acquisition [Line Items] | ||||
| Number of reporting units | reporting_unit | 2 | |||
| Impairment losses for goodwill | $ 0 | $ 0 | $ 0 | $ 0 |
| Accumulated impairment of goodwill since the merger | $ 4,766,000,000 | 4,766,000,000 | ||
| Pandora | ||||
| Business Acquisition [Line Items] | ||||
| Goodwill acquired during period | $ 1,562,000,000 | |||
| X | ||||||||||
- 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. No definition available.
|
| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. No definition available.
|
| X | ||||||||||
- Details
|