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Revenue from Contracts with Customers (Tables) | 9 Months Ended
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Sep. 30, 2019
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following table summarizes revenue from contracts with customers by principal service line (in millions):
|  | Three Months Ended September 30 |  | Nine Months Ended September 30
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Commercial Risk Solutions |  | $ | 1,057 |  |  | $ | 1,029 |  |  | $ | 3,342 |  |  | $ | 3,379 |
Reinsurance Solutions |  | 291 |  |  | 279 |  |  | 1,499 |  |  | 1,401 |
Retirement Solutions |  | 484 |  |  | 501 |  |  | 1,323 |  |  | 1,356 |
Health Solutions |  | 279 |  |  | 278 |  |  | 1,082 |  |  | 1,038 |
Data & Analytic Services |  | 271 |  |  | 263 |  |  | 893 |  |  | 834 |
Elimination |  | (3 | ) |  | (1 | ) |  | (11 | ) |  | (8 | )
Total revenue |  | $ | 2,379 |  |  | $ | 2,349 |  |  | $ | 8,128 |  |  | $ | 8,000 |
Consolidated revenue from contracts with customers by geographic area, which is attributed on the basis of where the services are performed, is as follows (in millions):
|  | Three Months Ended September 30 |  | Nine Months Ended September 30
|  | 2019 |  | 2018 |  | 2019 |  | 2018
United States |  | $ | 1,209 |  |  | $ | 1,215 |  |  | $ | 3,516 |  |  | $ | 3,456 |
Americas other than United States |  | 256 |  |  | 203 |  |  | 723 |  |  | 683 |
United Kingdom |  | 358 |  |  | 264 |  |  | 1,210 |  |  | 1,161 |
Europe, Middle East, & Africa other than United Kingdom |  | 283 |  |  | 399 |  |  | 1,793 |  |  | 1,871 |
Asia Pacific |  | 273 |  |  | 268 |  |  | 886 |  |  | 829 |
Total revenue |  | $ | 2,379 |  |  | $ | 2,349 |  |  | $ | 8,128 |  |  | $ | 8,000 |
Capitalized Contract Cost | An analysis of the changes in the net carrying amount of costs to fulfill contracts with customers are as follows (in millions):
|  | Three Months Ended September 30 |  | Nine Months Ended September 30
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Balance at beginning of period |  | $ | 216 |  |  | $ | 216 |  |  | $ | 329 |  |  | $ | 298 |
Additions |  | 326 |  |  | 332 |  |  | 1,008 |  |  | 1,043 |
Amortization |  | (299 | ) |  | (305 | ) |  | (1,095 | ) |  | (1,090 | )
Impairment |  | — |  |  | — |  |  | — |  |  | — |
Foreign currency translation and other |  | (4 | ) |  | 5 |  |  | (3 | ) |  | (3 | )
Balance at end of period |  | $ | 239 |  |  | $ | 248 |  |  | $ | 239 |  |  | $ | 248 |
An analysis of the changes in the net carrying amount of costs to obtain contracts with customers are as follows (in millions):
|  | Three Months Ended September 30 |  | Nine Months Ended September 30
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Balance at beginning of period |  | $ | 161 |  |  | $ | 144 |  |  | $ | 156 |  |  | $ | 145 |
Additions |  | 14 |  |  | 16 |  |  | 40 |  |  | 37 |
Amortization |  | (11 | ) |  | (9 | ) |  | (33 | ) |  | (30 | )
Impairment |  | — |  |  | — |  |  | — |  |  | — |
Foreign currency translation and other |  | (1 | ) |  | (1 | ) |  | — |  |  | (2 | )
Balance at end of period |  | $ | 163 |  |  | $ | 150 |  |  | $ | 163 |  |  | $ | 150 |

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- Definition Tabular disclosure of cost capitalized in obtaining or fulfilling contract with customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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