Derivatives And Hedging Activities	12 Months Ended
Dec. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities The Company uses derivative instruments as part of its risk management strategy only, and includes derivatives utilized as economic hedges that are not designated as hedging instruments. By nature, all financial instruments involve market and credit risks. The Company enters into derivative instruments with major investment grade financial institutions and has policies to monitor the credit risk of those counterparties. The Company does not enter into derivative contracts for trading or other speculative purposes, nor does the Company use leveraged financial instruments. Approximately 70% of the Company’s business is conducted outside of the United States, generally in foreign currencies. As a result, fluctuations in foreign currency exchange rates can increase the costs of financing, investing and operating the business. In the ordinary course of business, the Company enters into foreign exchange contracts for periods consistent with its committed exposures to mitigate the effect of foreign currency movements on transactions denominated in foreign currencies. The intent of these economic hedges is to offset gains and losses that occur on the underlying exposures from these currencies, with gains and losses resulting from the forward currency contracts that hedge these exposures. Transactions covered by hedge contracts include intercompany and third-party receivables and payables. The contracts are primarily in European and Asian currencies, have maturities that do not exceed 12 months, have no cash requirements until maturity, and are recorded at fair value on the Company’s consolidated balance sheets. The unrealized gains and losses on the Company’s foreign currency contracts are recognized immediately in interest and other expense, net. The cash flows related to the settlement of these hedges are included in cash flows from operating activities within the Company’s consolidated statements of cash flows. Principal hedged currencies include the British Pound, Euro, Swedish Krona, Chinese Yuan and Singapore Dollar. The Company held forward foreign exchange contracts, designated as economic hedges, with U.S. dollar equivalent notional amounts totaling $223.3 million at December 30, 2018, $212.1 million at December 31, 2017, and $137.5 million at January 1, 2017, and the fair value of these foreign currency derivative contracts was insignificant. The gains and losses realized on these foreign currency derivative contracts are not material. The duration of these contracts was generally 30 days or less during each of fiscal years 2018, 2017 and 2016. In addition, in connection with certain intercompany loan agreements utilized to finance its acquisitions and stock repurchase program, the Company enters into forward foreign exchange contracts intended to hedge movements in foreign exchange rates prior to settlement of such intercompany loans denominated in foreign currencies. The Company records these hedges at fair value on the Company’s consolidated balance sheets. The unrealized gains and losses on these hedges, as well as the gains and losses associated with the remeasurement of the intercompany loans, are recognized immediately in interest and other expense, net. The cash flows related to the settlement of these hedges are included in cash flows from financing activities within the Company’s consolidated statements of cash flows. The outstanding forward exchange contracts designated as economic hedges, which were intended to hedge movements in foreign exchange rates prior to the settlement of certain intercompany loan agreements, included combined Euro notional amounts of €37.3 million and combined U.S. Dollar notional amounts of $5.7 million as of December 30, 2018, combined Euro notional amounts of €57.2 million and combined U.S. Dollar notional amounts of $1.3 billion as of December 31, 2017, and combined Euro notional amounts of €58.6 million, combined U.S. Dollar notional amounts of $8.7 million and combined Swedish Krona notional amounts of kr969.5 million as of January 1, 2017. The net gains and losses on these derivatives, combined with the gains and losses on the remeasurement of the hedged intercompany loans were not material for each of the fiscal years 2018 and 2017. The Company paid $34.1 million and $13.8 million during the fiscal years 2018 and 2017, respectively, from the settlement of these hedges. During fiscal year 2018, the Company entered into a series of foreign currency forward contracts with a notional amount of €298.7 million to hedge its investments in certain foreign subsidiaries. Realized and unrealized translation adjustments from these hedges were included in the foreign currency translation component of AOCI, which offsets translation adjustments on the underlying net assets of foreign subsidiaries. The cumulative translation gains or losses will remain in AOCI until the foreign subsidiaries are liquidated or sold. The foreign currency forward contracts were settled during the second quarter of 2018 and the Company recorded a net realized foreign exchange loss in AOCI of $2.6 million for the fiscal year ended December 30, 2018. During fiscal year 2016, the Company designated the 2026 Notes to hedge its investments in certain foreign subsidiaries. In January 2018, the Company removed the hedging relationship of its 2026 Notes and investments in certain foreign subsidiaries and recognized $2.1 million of unrealized foreign exchange gain in AOCI. In April 2018, the Company designated a portion of the 2026 Notes to hedge its investments in certain foreign subsidiaries. Unrealized translation adjustments from a portion of the 2026 Notes were included in the foreign currency translation component of AOCI, which offsets translation adjustments on the underlying net assets of foreign subsidiaries. The cumulative translation gains or losses will remain in AOCI until the foreign subsidiaries are liquidated or sold. As of December 30, 2018, the total notional amount of the 2026 Notes that was designated to hedge investments in foreign subsidiaries was €216.0 million. The unrealized foreign exchange gain recorded in AOCI related to the net investment hedge was $9.3 million for the fiscal year ended December 30, 2018. During fiscal year 2018, the Company designated the April 2021 Notes to hedge its investments in certain foreign subsidiaries. Unrealized translation adjustments from the April 2021 Notes were included in the foreign currency translation component of AOCI, which offsets translation adjustments on the underlying net assets of foreign subsidiaries. The cumulative translation gains or losses will remain in AOCI until the foreign subsidiaries are liquidated or sold. As of December 30, 2018, the total notional amount of the April 2021 Notes that was designated to hedge investments in foreign subsidiaries was €298.7 million. The unrealized foreign exchange gain recorded in AOCI related to the net investment hedge was $27.5 million for the fiscal year ended December 30, 2018. The Company does not expect any material net pre-tax gains or losses to be reclassified from accumulated other comprehensive (loss) income into interest and other expense, net within the next twelve months.

Derivatives and Hedging Activities

The Company uses derivative instruments as part of its risk management strategy only, and includes derivatives utilized as economic hedges that are not designated as hedging instruments. By nature, all financial instruments involve market and credit risks. The Company enters into derivative instruments with major investment grade financial institutions and has policies to monitor the credit risk of those counterparties. The Company does not enter into derivative contracts for trading or other speculative purposes, nor does the Company use leveraged financial instruments. Approximately 70% of the Company’s business is conducted outside of the United States, generally in foreign currencies. As a result, fluctuations in foreign currency exchange rates can increase the costs of financing, investing and operating the business.

In the ordinary course of business, the Company enters into foreign exchange contracts for periods consistent with its committed exposures to mitigate the effect of foreign currency movements on transactions denominated in foreign currencies. The intent of these economic hedges is to offset gains and losses that occur on the underlying exposures from these currencies, with gains and losses resulting from the forward currency contracts that hedge these exposures. Transactions covered by hedge contracts include intercompany and third-party receivables and payables. The contracts are primarily in European and Asian currencies, have maturities that do not exceed 12 months, have no cash requirements until maturity, and are recorded at fair value on the Company’s consolidated balance sheets. The unrealized gains and losses on the Company’s foreign currency contracts are recognized immediately in interest and other expense, net. The cash flows related to the settlement of these hedges are included in cash flows from operating activities within the Company’s consolidated statements of cash flows.

Principal hedged currencies include the British Pound, Euro, Swedish Krona, Chinese Yuan and Singapore Dollar. The Company held forward foreign exchange contracts, designated as economic hedges, with U.S. dollar equivalent notional amounts totaling $223.3 million at December 30, 2018, $212.1 million at December 31, 2017, and $137.5 million at January 1, 2017, and the fair value of these foreign currency derivative contracts was insignificant. The gains and losses realized on these foreign currency derivative contracts are not material. The duration of these contracts was generally 30 days or less during each of fiscal years 2018, 2017 and 2016.

In addition, in connection with certain intercompany loan agreements utilized to finance its acquisitions and stock repurchase program, the Company enters into forward foreign exchange contracts intended to hedge movements in foreign exchange rates prior to settlement of such intercompany loans denominated in foreign currencies. The Company records these hedges at fair value on the Company’s consolidated balance sheets. The unrealized gains and losses on these hedges, as well as the gains and losses associated with the remeasurement of the intercompany loans, are recognized immediately in interest and other expense, net. The cash flows related to the settlement of these hedges are included in cash flows from financing activities within the Company’s consolidated statements of cash flows.

The outstanding forward exchange contracts designated as economic hedges, which were intended to hedge movements in foreign exchange rates prior to the settlement of certain intercompany loan agreements, included combined Euro notional amounts of €37.3 million and combined U.S. Dollar notional amounts of $5.7 million as of December 30, 2018, combined Euro notional amounts of €57.2 million and combined U.S. Dollar notional amounts of $1.3 billion as of December 31, 2017, and combined Euro notional amounts of €58.6 million, combined U.S. Dollar notional amounts of $8.7 million and combined Swedish Krona notional amounts of kr969.5 million as of January 1, 2017. The net gains and losses on these derivatives, combined with the gains and losses on the remeasurement of the hedged intercompany loans were not material for each of the fiscal years 2018 and 2017. The Company paid $34.1 million and $13.8 million during the fiscal years 2018 and 2017, respectively, from the settlement of these hedges.

During fiscal year 2018, the Company entered into a series of foreign currency forward contracts with a notional amount of €298.7 million to hedge its investments in certain foreign subsidiaries. Realized and unrealized translation adjustments from these hedges were included in the foreign currency translation component of AOCI, which offsets translation adjustments on the underlying net assets of foreign subsidiaries. The cumulative translation gains or losses will remain in AOCI until the foreign subsidiaries are liquidated or sold. The foreign currency forward contracts were settled during the second quarter of 2018 and the Company recorded a net realized foreign exchange loss in AOCI of $2.6 million for the fiscal year ended December 30, 2018.

During fiscal year 2016, the Company designated the 2026 Notes to hedge its investments in certain foreign subsidiaries. In January 2018, the Company removed the hedging relationship of its 2026 Notes and investments in certain foreign subsidiaries and recognized $2.1 million of unrealized foreign exchange gain in AOCI. In April 2018, the Company designated a portion of the 2026 Notes to hedge its investments in certain foreign subsidiaries. Unrealized translation adjustments from a portion of the 2026 Notes were included in the foreign currency translation component of AOCI, which offsets translation adjustments on the underlying net assets of foreign subsidiaries. The cumulative translation gains or losses will remain in AOCI until the foreign subsidiaries are liquidated or sold. As of December 30, 2018, the total notional amount of the 2026 Notes that was designated to hedge investments in foreign subsidiaries was €216.0 million. The unrealized foreign exchange gain recorded in AOCI related to the net investment hedge was $9.3 million for the fiscal year ended December 30, 2018.

During fiscal year 2018, the Company designated the April 2021 Notes to hedge its investments in certain foreign subsidiaries. Unrealized translation adjustments from the April 2021 Notes were included in the foreign currency translation component of AOCI, which offsets translation adjustments on the underlying net assets of foreign subsidiaries. The cumulative translation gains or losses will remain in AOCI until the foreign subsidiaries are liquidated or sold. As of December 30, 2018, the total notional amount of the April 2021 Notes that was designated to hedge investments in foreign subsidiaries was €298.7 million. The unrealized foreign exchange gain recorded in AOCI related to the net investment hedge was $27.5 million for the fiscal year ended December 30, 2018.

The Company does not expect any material net pre-tax gains or losses to be reclassified from accumulated other comprehensive (loss) income into interest and other expense, net within the next twelve months.