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Description of Business and Significant Accounting Policies - Summary of Amounts Capitalized and Amortized (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Capitalized deferred commission costs | $ 33
Amortized deferred commission costs | $ 2

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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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