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Purchase Price Allocations for Acquisitions (Details) $ in Thousands, € in Millions, £ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) | Dec. 31, 2016 GBP (£) | Dec. 31, 2016 USD ($) | Dec. 31, 2016 EUR (€) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 EUR (€)
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Number of Businesses Acquired |  |  |  | 21 |  |  |  |  |  |  |  |
Goodwill | $ 3,392,363 | $ 3,054,769 |  | $ 3,392,363 |  | $ 3,392,363 |  | $ 3,054,769 |  |  |  |
Gains on bargain purchases | (913) | (8,000) | $ 0 | (3,990) | $ 0 | (11,000) |  |  |  |  |  |
Cash used in acquisitions, net of cash acquired |  |  |  | 252,667 | $ 1,301,127 |  |  |  |  |  |  |
All 2017 Acquisitions |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  | 280,000 |  |  |  |  |  |  |  |
Goodwill | 185,000 |  |  | 185,000 |  | 185,000 |  |  |  |  |  |
Other intangibles | 31,149 |  |  | 31,149 |  | 31,149 |  |  |  |  |  |
Contingent consideration liabilities | (6,234) |  |  | (6,234) |  | (6,234) |  |  |  |  |  |
Notes issued | (18,899) |  |  | (18,899) |  | (18,899) |  |  |  |  |  |
Settlement of pre-existing balances | (1,000) |  |  | (1,000) |  | (1,000) |  |  |  |  |  |
Cash used in acquisitions, net of cash acquired |  |  |  | 250,000 |  |  |  |  |  |  |  |
Andrew Page |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  | £ 16 | 20,000 |  |  |  |
Gains on bargain purchases | (3,000) |  |  |  |  |  |  |  |  |  |  |
All 2016 Acquisitions |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Receivables |  | 380,409 |  |  |  |  |  | 380,409 |  |  |  |
Receivable reserves |  | (36,171) |  |  |  |  |  | (36,171) |  |  |  |
Inventories (3) |  | 470,911 |  |  |  |  |  | 470,911 |  |  |  |
Prepaid expenses and other current assets |  | 57,811 |  |  |  |  |  | 57,811 |  |  |  |
Property and equipment |  | 299,559 |  |  |  |  |  | 299,559 |  |  |  |
Goodwill |  | 842,809 |  |  |  |  |  | 842,809 |  |  |  |
Other intangibles |  | 469,851 |  |  |  |  |  | 469,851 |  |  |  |
Other assets (4) |  | 59,630 |  |  |  |  |  | 59,630 |  |  |  |
Deferred income taxes |  | (94,285) |  |  |  |  |  | (94,285) |  |  |  |
Current liabilities assumed |  | (450,287) |  |  |  |  |  | (450,287) |  |  |  |
Debt assumed |  | (557,248) |  |  |  |  |  | (557,248) |  |  |  |
Other noncurrent liabilities assumed |  | (74,035) |  |  |  |  |  | (74,035) |  |  |  |
Other purchase price obligations |  | (6,698) |  |  |  |  |  | (6,698) |  |  |  |
Notes issued |  | (4,087) |  |  |  |  |  | (4,087) |  |  |  |
Settlement of pre-existing balances |  | (623) |  |  |  |  |  | (623) |  |  |  |
Gains on bargain purchases |  |  |  |  |  |  |  | (8,207) |  |  |  |
Cash used in acquisitions, net of cash acquired |  |  |  |  |  |  |  | 1,349,339 |  |  |  |
2017 Acquisitions and Adjustments to 2016 Acquisitions |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Receivables | 53,509 |  |  | 53,509 |  | 53,509 |  |  |  |  |  |
Receivable reserves | (5,696) |  |  | (5,696) |  | (5,696) |  |  |  |  |  |
Inventories (3) | 121,484 |  |  | 121,484 |  | 121,484 |  |  |  |  |  |
Prepaid expenses and other current assets | (1,147) |  |  | (1,147) |  | (1,147) |  |  |  |  |  |
Property and equipment | 5,511 |  |  | 5,511 |  | 5,511 |  |  |  |  |  |
Goodwill | 192,688 |  |  | 192,688 |  | 192,688 |  |  |  |  |  |
Other intangibles | 31,149 |  |  | 31,149 |  | 31,149 |  |  |  |  |  |
Other assets (4) | 2,188 |  |  | 2,188 |  | 2,188 |  |  |  |  |  |
Deferred income taxes | (1,676) |  |  | (1,676) |  | (1,676) |  |  |  |  |  |
Current liabilities assumed | (83,223) |  |  | (83,223) |  | (83,223) |  |  |  |  |  |
Debt assumed | (29,900) |  |  | (29,900) |  | (29,900) |  |  |  |  |  |
Other noncurrent liabilities assumed | (1,563) |  |  | (1,563) |  | (1,563) |  |  |  |  |  |
Other purchase price obligations | (3,777) |  |  | (3,777) |  | (3,777) |  |  |  |  |  |
Settlement of pre-existing balances | (620) |  |  | (620) |  | (620) |  |  |  |  |  |
Gains on bargain purchases |  |  |  | (3,990) |  |  |  |  |  |  |  |
Settlement of other purchase price obligations (non-interest bearing) |  |  |  | 2,863 |  |  |  |  |  |  |  |
Cash used in acquisitions, net of cash acquired |  |  |  | 252,667 |  |  |  |  |  |  |  |
Rhiag |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  | 602,000 | € 534 |  |  |
Receivables |  | 230,670 |  |  |  |  |  | 230,670 |  |  |  |
Receivable reserves |  | (28,242) |  |  |  |  |  | (28,242) |  |  |  |
Inventories (3) |  | 239,529 |  |  |  |  |  | 239,529 |  |  |  |
Prepaid expenses and other current assets |  | 10,793 |  |  |  |  |  | 10,793 |  |  |  |
Property and equipment |  | 56,774 |  |  |  |  |  | 56,774 |  |  |  |
Goodwill |  | 585,415 |  |  |  |  |  | 585,415 |  |  | $ 591,000 |
Other intangibles |  | 429,360 |  |  |  |  |  | 429,360 |  |  |  |
Other assets (4) |  | 2,092 |  |  |  |  |  | 2,092 |  |  |  |
Deferred income taxes |  | (110,791) |  |  |  |  |  | (110,791) |  |  |  |
Current liabilities assumed |  | (239,665) |  |  |  |  |  | (239,665) |  |  |  |
Debt assumed |  | (550,843) |  |  |  |  |  | (550,843) |  |  |  | € (489)
Other noncurrent liabilities assumed |  | (23,085) |  |  |  |  |  | (23,085) |  |  |  |
Other purchase price obligations |  | 0 |  |  |  |  |  | 0 |  |  |  |
Notes issued |  | 0 |  |  |  |  |  | 0 |  |  |  |
Settlement of pre-existing balances |  | (591) |  |  |  |  |  | (591) |  |  |  | € (1)
Cash used in acquisitions, net of cash acquired |  |  |  |  |  |  |  | 601,416 | € 534 |  |  |
PGW |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Receivables |  | 136,523 |  |  |  |  |  | 136,523 |  |  |  |
Receivable reserves |  | (7,135) |  |  |  |  |  | (7,135) |  |  |  |
Inventories (3) |  | 169,159 |  |  |  |  |  | 169,159 |  |  |  |
Prepaid expenses and other current assets |  | 42,573 |  |  |  |  |  | 42,573 |  |  |  |
Property and equipment |  | 225,645 |  |  |  |  |  | 225,645 |  |  |  |
Goodwill |  | 205,058 |  |  |  |  |  | 205,058 |  | $ 208,000 |  |
Other intangibles |  | 37,954 |  |  |  |  |  | 37,954 |  |  |  |
Other assets (4) |  | 57,671 |  |  |  |  |  | 57,671 |  |  |  |
Deferred income taxes |  | 17,506 |  |  |  |  |  | 17,506 |  |  |  |
Current liabilities assumed |  | (168,332) |  |  |  |  |  | (168,332) |  |  |  |
Debt assumed |  | (4,027) |  |  |  |  |  | (4,027) |  |  |  |
Other noncurrent liabilities assumed |  | (50,847) |  |  |  |  |  | (50,847) |  |  |  |
Other purchase price obligations |  | 0 |  |  |  |  |  | 0 |  |  |  |
Notes issued |  | 0 |  |  |  |  |  | 0 |  |  |  |
Settlement of pre-existing balances |  | 0 |  |  |  |  |  | 0 |  |  |  |
Cash used in acquisitions, net of cash acquired |  |  |  |  |  |  |  | 661,748 |  |  |  |
All 2016 Acquisitions Excluding Rhiag and PGW |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Receivables |  | 13,216 |  |  |  |  |  | 13,216 |  |  |  |
Receivable reserves |  | (794) |  |  |  |  |  | (794) |  |  |  |
Inventories (3) |  | 62,223 |  |  |  |  |  | 62,223 |  |  |  |
Prepaid expenses and other current assets |  | 4,445 |  |  |  |  |  | 4,445 |  |  |  |
Property and equipment |  | 17,140 |  |  |  |  |  | 17,140 |  |  |  |
Goodwill |  | 52,336 |  |  |  |  |  | 52,336 |  |  |  |
Other intangibles |  | 2,537 |  |  |  |  |  | 2,537 |  |  |  |
Other assets (4) |  | (133) |  |  |  |  |  | (133) |  |  |  |
Deferred income taxes |  | (1,000) |  |  |  |  |  | (1,000) |  |  |  |
Current liabilities assumed |  | (42,290) |  |  |  |  |  | (42,290) |  |  |  |
Debt assumed |  | (2,378) |  |  |  |  |  | (2,378) |  |  |  |
Other noncurrent liabilities assumed |  | (103) |  |  |  |  |  | (103) |  |  |  |
Other purchase price obligations |  | (6,698) |  |  |  |  |  | (6,698) |  |  |  |
Notes issued |  | (4,087) |  |  |  |  |  | (4,087) |  |  |  |
Settlement of pre-existing balances |  | $ (32) |  |  |  |  |  | (32) |  |  |  |
Gains on bargain purchases |  |  |  |  |  |  |  | (8,207) |  |  |  |
Cash used in acquisitions, net of cash acquired |  |  |  |  |  |  |  | 86,175 |  |  |  |
Adjustments in 2017 |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Gains on bargain purchases |  |  |  | (3,000) |  |  |  |  |  |  |  |
Adjustments in 2017 | Rhiag |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment | 6,000 |  |  | 6,000 |  | 6,000 |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  |  | $ 5,000 |
Adjustments in 2017 | PGW |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Prepaid expenses and other current assets | $ 3,000 |  |  | $ 3,000 |  | $ 3,000 |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  | $ 3,000 |  |
PGW |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Business Combinations, Equity Method Investment |  |  |  |  |  |  |  | $ 24,000 |  |  |  |

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- Definition In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6393-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6527-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6571-128477 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6387-128476 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6396-128476 + Details
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- Definition Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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