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Revenue from Contracts with Customers - Transaction Price Allocated to Unsatisfied Obligations (Details) $ in Millions | Dec. 31, 2018 USD ($)
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Revenue from Contract with Customer [Abstract] |
Remaining unsatisfied obligations | $ 2,547
Amount of of customer only general cancellation | 1,468
Amount of non-cancelable contracts | 729
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 |
Revenue from Contract with Customer [Abstract] |
Remaining unsatisfied obligations | $ 1,200
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Expected timing of satisfaction, period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 |
Revenue from Contract with Customer [Abstract] |
Remaining unsatisfied obligations | $ 1,347
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Expected timing of satisfaction, period |

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- Definition Revenue, Remaining Performance Obligation, Amount of Customer Only General Cancellation + References No definition available. + Details
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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045 + Details
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- 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. + References No definition available. + Details
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- Definition Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045 + Details
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