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FAIR VALUE MEASUREMENTS (Tables) | 9 Months Ended
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Sep. 30, 2018
Fair Value Disclosures [Abstract] |
Table of financial instruments measured at fair value | The following table summarizes the assets and liabilities measured at fair value in the condensed balance sheets:
| Fair Value Measurements
Balance at September 30, 2018 | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets | ($ in millions)
Interest rate swaps | $ | — |  |  | $ | 9.2 |  |  | $ | — |  |  | $ | 9.2 |
Commodity contracts | — |  |  | 2.2 |  |  | — |  |  | 2.2 |
Foreign exchange contracts | — |  |  | 0.2 |  |  | — |  |  | 0.2 |
Liabilities |  |  |  |  |  |  |
Interest rate swaps | $ | — |  |  | $ | 47.8 |  |  | $ | — |  |  | $ | 47.8 |
Commodity contracts | — |  |  | 1.5 |  |  | — |  |  | 1.5 |
Foreign exchange contracts | — |  |  | 2.2 |  |  | — |  |  | 2.2 |
Balance at December 31, 2017 |  |  |  |  |  |  |
Assets |
Interest rate swaps | $ | — |  |  | $ | 10.5 |  |  | $ | — |  |  | $ | 10.5 |
Commodity contracts | — |  |  | 11.3 |  |  | — |  |  | 11.3 |
Foreign exchange contracts | — |  |  | 1.0 |  |  | — |  |  | 1.0 |
Liabilities |  |  |  |  |  |  |
Interest rate swaps | $ | — |  |  | $ | 28.1 |  |  | $ | — |  |  | $ | 28.1 |
Commodity contracts | — |  |  | 3.8 |  |  | — |  |  | 3.8 |
Balance at September 30, 2017 |  |  |  |  |  |  |
Assets |
Interest rate swaps | $ | — |  |  | $ | 8.7 |  |  | $ | — |  |  | $ | 8.7 |
Commodity contracts | — |  |  | 7.4 |  |  | — |  |  | 7.4 |
Foreign exchange contracts | — |  |  | 0.2 |  |  | — |  |  | 0.2 |
Liabilities |  |  |  |  |  |  |
Interest rate swaps | $ | — |  |  | $ | 23.9 |  |  | $ | — |  |  | $ | 23.9 |
Commodity contracts | — |  |  | 2.6 |  |  | — |  |  | 2.6 |
Foreign exchange contracts | — |  |  | 0.1 |  |  | — |  |  | 0.1 |
Fair value of debt table | The following table summarizes the fair value measurements of debt and the actual debt recorded on our condensed balance sheets:
| Fair Value Measurements |  | Amount recorded on balance sheets
| Level 1 |  | Level 2 |  | Level 3 |  | Total |
| ($ in millions)
Balance at September 30, 2018 | $ | — |  |  | $ | 3,331.9 |  |  | $ | 153.0 |  |  | $ | 3,484.9 |  |  | $ | 3,337.3 |
Balance at December 31, 2017 | — |  |  | 3,758.0 |  |  | 153.0 |  |  | 3,911.0 |  |  | 3,612.0 |
Balance at September 30, 2017 | — |  |  | 3,920.5 |  |  | 153.0 |  |  | 4,073.5 |  |  | 3,745.2 |

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- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=66048111&loc=SL7498348-110258 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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