Revenue (Assets Recognized from the Costs to Obtain a Contract with a Customer) (Details) |
3 Months Ended |
|---|---|
Mar. 31, 2018 | |
| Minimum | |
| Capitalized Contract Cost [Line Items] | |
| Amortization period | 2 years |
| Maximum | |
| Capitalized Contract Cost [Line Items] | |
| Amortization period | 5 years |
| X | ||||||||||
- Definition Capitalized Contract Cost, Amortization Period No definition available.
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| 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.
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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