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Revenue (Tables) | 3 Months Ended
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Mar. 31, 2018
Revenue from Contract with Customer [Abstract] |
Changes in Contract Assets and Contract Liabilities Balances | The following table represents changes in our contract assets and contract liabilities balances:
| March 31, 2018 |  | January 1, 2018 |  | Year-to-date Change ($) |  | Year-to-date Change (%)
Contract assets |  |  |  |  |  |  |
Accounts receivable, net of allowances | $ | 207.3 |  |  | $ | 222.7 |  |  | (15.4 | ) |  | 6.9 | %
Unbilled contract revenue | 37.7 |  |  | 43.5 |  |  | (5.8 | ) |  | 13.3 | %
Contract liabilities |  |  |  |  |  |  |
Customer advances and billings in excess of contract revenue | $ | 114.7 |  |  | $ | 100.3 |  |  | 14.4 |  |  | (14.4 | )%
Long-term deferred revenue | 2.7 |  |  | 2.6 |  |  | 0.1 |  |  | (3.8 | )%
Disaggregation of Revenue by Product Application | The following table represents a disaggregation of revenue by product application along with the reportable segment for each category:
| For the Three Months Ended March 31, 2018
| Energy & Chemicals |  | Distribution & Storage |  | BioMedical |  | Intersegment Eliminations |  | Consolidated
Natural gas processing (including petrochemical) applications | $ | 58.7 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 58.7 |
Liquefied natural gas (LNG) applications | 9.0 |  |  | 34.2 |  |  | — |  |  | (1.0 | ) |  | 42.2 |
Industrial gas applications | 3.4 |  |  | — |  |  | — |  |  | — |  |  | 3.4 |
HVAC, power and refining applications | 18.8 |  |  | — |  |  | — |  |  | — |  |  | 18.8 |
Bulk industrial gas applications | — |  |  | 53.0 |  |  | — |  |  | — |  |  | 53.0 |
Packaged gas industrial applications | — |  |  | 48.9 |  |  | — |  |  | — |  |  | 48.9 |
Respiratory therapy | — |  |  | — |  |  | 28.9 |  |  | — |  |  | 28.9 |
Cryobiological storage | — |  |  | — |  |  | 19.1 |  |  | — |  |  | 19.1 |
On-site generation systems | — |  |  | — |  |  | 6.7 |  |  | — |  |  | 6.7 |
Total | $ | 89.9 |  |  | $ | 136.1 |  |  | $ | 54.7 |  |  | $ | (1.0 | ) |  | $ | 279.7 |
Disaggregation of Revenue by Timing | The following table represents a disaggregation of revenue by timing of revenue along with the reportable segment for each category:
| For the Three Months Ended March 31, 2018
| Energy & Chemicals |  | Distribution & Storage |  | BioMedical |  | Intersegment Eliminations |  | Consolidated
Point in time | $ | 23.9 |  |  | $ | 121.1 |  |  | $ | 53.4 |  |  | $ | — |  |  | $ | 198.4 |
Over time | 66.0 |  |  | 15.0 |  |  | 1.3 |  |  | (1.0 | ) |  | 81.3 |
Total | $ | 89.9 |  |  | $ | 136.1 |  |  | $ | 54.7 |  |  | $ | (1.0 | ) |  | $ | 279.7 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130551-203045 + 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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
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- Definition Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599 + Details
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