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Revenue from Contracts with Customers - Contract Assets Rollforward (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2018 USD ($)
Capitalized Cost To Fulfill Customer Contracts |
Change in Capitalized Contract Costs |
Balance at beginning of period | $ 298
Additions | 370
Amortization | (432)
Impairment | 0
Foreign currency and other | 4
Balance at end of period | 240
Capitalized Cost To Obtain Customer Contracts |
Change in Capitalized Contract Costs |
Balance at beginning of period | 145
Additions | 8
Amortization | (10)
Impairment | 0
Foreign currency and other | 1
Balance at end of period | $ 144

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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://www.xbrl.org/2003/role/presentationRef -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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- Definition Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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