| **Product Warranties (Tables)**                  | 3 Months Ended                                                                                                                                                                                                                                                                           |
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| **Guarantees and Product Warranties [Abstract]** |                                                                                                                                                                                                                                                                                     |
| Schedule of Warranty Liability Activity          | The following table presents the Company’s warranty liability activity:(dollars in millions)Three Months EndedMarch 31,20222021Balance at January 1,$184.4 $142.3 Expense13.9 12.6 Claims settled(15.4)(13.3)Balance at March 31,$182.9 $141.6  |

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| - References
No definition available.
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| - Definition
Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.
+ References
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=123368208&loc=d3e12565-110249
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