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Geographic Information (Tables) | 12 Months Ended
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Dec. 31, 2017
Segments, Geographical Areas [Abstract] |
Revenues and Long-Lived Assets By Geographic Areas | Our revenues and long-lived assets related to the following geographic areas:
Revenues | 2017 |  | 2016 |  | 2015
United States | $ | 3,842.9 |  |  | 3,493.5 |  |  | 3,441.1 |
Canada | 257.6 |  |  | 228.7 |  |  | 223.3 |
Other foreign countries | 290.0 |  |  | 239.8 |  |  | 204.8 |
Total revenues | $ | 4,390.5 |  |  | 3,962.0 |  |  | 3,869.2 |
Long-Lived Assets | 2017 |  | 2016 |  | 2015
United States | $ | 919.5 |  |  | 899.1 |  |  | 821.1 |
Canada | 35.9 |  |  | 33.2 |  |  | 32.3 |
Other foreign countries | 19.4 |  |  | 15.8 |  |  | 14.3 |
Total long-lived assets | $ | 974.8 |  |  | 948.1 |  |  | 867.7 |

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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