Derivative Financial Instruments (Derivative Instruments and Hedging Activities Disclosures) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI-Effective Portion	$ (2,644)	$ 3,910	$ (1,818)	$ 950
Forward Contracts \| Designated as Hedging Instrument \| Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI-Effective Portion	(7,258)	0	(6,490)	0
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	(4,132)	0	(5,172)	0
Forward Contracts \| Designated as Hedging Instrument \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in OCI-Effective Portion	0	4,468	187	1,086
Forward Contracts \| Total software revenue \| Designated as Hedging Instrument \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from OCI into Income-Effective Portion	0	(277)	627	(2,659)
Forward Contracts \| Other income (expense), net \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Net realized and unrealized gain or (loss) (excluding the underlying foreign currency exposure being hedged)	(1,735)	9,392	1,004	6,370
Forward Contracts \| Other income (expense), net \| Designated as Hedging Instrument \| Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized-Ineffective Portion	1,562	0	3,155	0
Forward Contracts \| Other income (expense), net \| Designated as Hedging Instrument \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized-Ineffective Portion	$ 0	$ 52	$ 0	$ 17

Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 20
-Section 45
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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
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Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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