Goodwill and Other Intangibles - Goodwill (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Dec. 31, 2017 |
|
| Changes in the carrying amount of goodwill | ||
| Gross Goodwill, at beginning of period | $ 1,839,207 | |
| Additions | 5,629 | |
| Gross Goodwill, at end of period | 1,844,836 | |
| Accumulated Impairment Losses | (762,021) | |
| Net Goodwill | 1,082,815 | $ 1,077,186 |
| Installation | ||
| Changes in the carrying amount of goodwill | ||
| Gross Goodwill, at beginning of period | 1,422,920 | |
| Additions | 2,741 | |
| Gross Goodwill, at end of period | 1,425,661 | |
| Accumulated Impairment Losses | (762,021) | |
| Net Goodwill | 663,640 | |
| Distribution | ||
| Changes in the carrying amount of goodwill | ||
| Gross Goodwill, at beginning of period | 416,287 | |
| Additions | 2,888 | |
| Gross Goodwill, at end of period | 419,175 | |
| Net Goodwill | $ 419,175 |
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|