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Condensed consolidating guarantor financial information - Cash Flows (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jul. 01, 2018 | Jul. 02, 2017
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | $ 181,584 | $ 197,690
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | (38,004) | (36,833)
Proceeds from sale of investments | 0 | 6,332
Payments for businesses and intangibles acquired, net of cash acquired | (22,450) | (993,459)
Net cash used in investing activities from continuing operations | (60,454) | (1,023,960)
Cash flows from financing activities of continuing operations: |  |
Proceeds from new borrowings | 0 | 1,194,500
Reduction in borrowings | (18,500) | (228,273)
Debt extinguishment, issuance and amendment fees | (188) | (19,114)
Net proceeds from share based compensation plans and the related tax impacts | 9,800 | 1,305
Payments for contingent consideration | (62,574) | (153)
Dividends paid | (30,938) | (30,590)
Intercompany transactions | 0 | 0
Intercompany dividends paid | 0 | 0
Net cash provided by (used in) financing activities from continuing operations | (102,400) | 917,675
Cash flows from discontinued operations: |  |
Net cash used in operating activities | (464) | (961)
Net cash used in discontinued operations | (464) | (961)
Effect of exchange rate changes on cash and cash equivalents | (5,520) | 41,981
Net increase in cash and cash equivalents | 12,746 | 132,425
Cash and cash equivalents at the beginning of the period | 333,558 | 543,789
Cash and cash equivalents at the end of the period | 346,304 | 676,214
Eliminations |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | (70,373) | (61,918)
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | 0 | 0
Proceeds from sale of investments | (22,944) | 0
Payments for businesses and intangibles acquired, net of cash acquired | 0 | 0
Net cash used in investing activities from continuing operations | (22,944) | 0
Cash flows from financing activities of continuing operations: |  |
Proceeds from new borrowings |  | 0
Reduction in borrowings | 0 | 0
Debt extinguishment, issuance and amendment fees | 0 | 0
Net proceeds from share based compensation plans and the related tax impacts | 0 | 0
Payments for contingent consideration | 0 | 0
Dividends paid | 0 | 0
Intercompany transactions | 22,944 | 0
Intercompany dividends paid | 70,373 | 61,918
Net cash provided by (used in) financing activities from continuing operations | 93,317 | 61,918
Cash flows from discontinued operations: |  |
Net cash used in operating activities | 0 | 0
Net cash used in discontinued operations | 0 | 0
Effect of exchange rate changes on cash and cash equivalents | 0 | 0
Net increase in cash and cash equivalents | 0 | 0
Cash and cash equivalents at the beginning of the period | 0 | 0
Cash and cash equivalents at the end of the period | 0 | 0
Parent Company |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | (165,764) | (121,726)
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | (795) | (173)
Proceeds from sale of investments | 22,944 | 0
Payments for businesses and intangibles acquired, net of cash acquired | 0 | (975,524)
Net cash used in investing activities from continuing operations | 22,149 | (975,697)
Cash flows from financing activities of continuing operations: |  |
Proceeds from new borrowings |  | 1,194,500
Reduction in borrowings | (18,500) | (228,273)
Debt extinguishment, issuance and amendment fees | (188) | (19,114)
Net proceeds from share based compensation plans and the related tax impacts | 9,800 | 1,305
Payments for contingent consideration | 0 | 0
Dividends paid | (30,938) | (30,590)
Intercompany transactions | 196,888 | 222,684
Intercompany dividends paid | 0 | 0
Net cash provided by (used in) financing activities from continuing operations | 157,062 | 1,140,512
Cash flows from discontinued operations: |  |
Net cash used in operating activities | (464) | (961)
Net cash used in discontinued operations | (464) | (961)
Effect of exchange rate changes on cash and cash equivalents | 0 | 0
Net increase in cash and cash equivalents | 12,983 | 42,128
Cash and cash equivalents at the beginning of the period | 37,803 | 14,571
Cash and cash equivalents at the end of the period | 50,786 | 56,699
Guarantor Subsidiaries |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | 253,365 | 232,874
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | (16,602) | (19,760)
Proceeds from sale of investments | 0 | 0
Payments for businesses and intangibles acquired, net of cash acquired | 1,404 | 0
Net cash used in investing activities from continuing operations | (15,198) | (19,760)
Cash flows from financing activities of continuing operations: |  |
Proceeds from new borrowings |  | 0
Reduction in borrowings | 0 | 0
Debt extinguishment, issuance and amendment fees | 0 | 0
Net proceeds from share based compensation plans and the related tax impacts | 0 | 0
Payments for contingent consideration | (62,574) | (153)
Dividends paid | 0 | 0
Intercompany transactions | (171,900) | (203,029)
Intercompany dividends paid | 0 | 0
Net cash provided by (used in) financing activities from continuing operations | (234,474) | (203,182)
Cash flows from discontinued operations: |  |
Net cash used in operating activities | 0 | 0
Net cash used in discontinued operations | 0 | 0
Effect of exchange rate changes on cash and cash equivalents | 0 | 0
Net increase in cash and cash equivalents | 3,693 | 9,932
Cash and cash equivalents at the beginning of the period | 8,933 | 1,031
Cash and cash equivalents at the end of the period | 12,626 | 10,963
Non-Guarantor Subsidiaries |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities from continuing operations | 164,356 | 148,460
Cash flows from investing activities of continuing operations: |  |
Expenditures for property, plant and equipment | (20,607) | (16,900)
Proceeds from sale of investments | 0 | 6,332
Payments for businesses and intangibles acquired, net of cash acquired | (23,854) | (17,935)
Net cash used in investing activities from continuing operations | (44,461) | (28,503)
Cash flows from financing activities of continuing operations: |  |
Proceeds from new borrowings |  | 0
Reduction in borrowings | 0 | 0
Debt extinguishment, issuance and amendment fees | 0 | 0
Net proceeds from share based compensation plans and the related tax impacts | 0 | 0
Payments for contingent consideration | 0 | 0
Dividends paid | 0 | 0
Intercompany transactions | (47,932) | (19,655)
Intercompany dividends paid | (70,373) | (61,918)
Net cash provided by (used in) financing activities from continuing operations | (118,305) | (81,573)
Cash flows from discontinued operations: |  |
Net cash used in operating activities | 0 | 0
Net cash used in discontinued operations | 0 | 0
Effect of exchange rate changes on cash and cash equivalents | (5,520) | 41,981
Net increase in cash and cash equivalents | (3,930) | 80,365
Cash and cash equivalents at the beginning of the period | 286,822 | 528,187
Cash and cash equivalents at the end of the period | $ 282,892 | $ 608,552

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