Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2019	Jul. 01, 2018
Cash flows from operating activities:
Net income	$ 64,280	$ 50,035
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	64,669	65,579
Share-based compensation	10,008	9,591
Impairment of long-lived assets	1,684	1,809
Deferred income tax	3,422	(2,508)
Non-cash rental expense (income), net	11,519	(6,239)
Change in operating lease liabilities	(20,983)	0
Net receipt of deferred vendor incentives	5,312	4,904
System optimization (gains) losses, net	(122)	478
Distributions received from joint ventures, net of equity in earnings	2,099	2,108
Long-term debt-related activities, net	10,799	15,036
Changes in operating assets and liabilities and other, net	1,373	7,628
Net cash provided by operating activities	154,060	148,421
Cash flows from investing activities:
Capital expenditures	(25,484)	(23,898)
Acquisitions	(5,052)	0
Dispositions	1,240	1,814
Proceeds from sale of investments	130	0
Notes receivable, net	(750)	(538)
Payments for investments	0	(13)
Net cash used in investing activities	(29,916)	(22,635)
Cash flows from financing activities:
Proceeds from long-term debt	850,000	930,809
Repayments of long-term debt	(877,876)	(878,849)
Repayments of finance lease liabilities	(3,521)	(2,784)
Deferred financing costs	(14,008)	(17,340)
Repurchases of common stock	(50,781)	(84,307)
Dividends	(46,193)	(40,645)
Proceeds from stock option exercises	19,160	13,197
Payments related to tax withholding for share-based compensation	(6,957)	(9,269)
Contingent consideration payment	0	(6,100)
Net cash used in financing activities	(130,176)	(95,288)
Net cash (used in) provided by operations before effect of exchange rate changes on cash	(6,032)	30,498
Effect of exchange rate changes on cash	3,866	(4,401)
Net (decrease) increase in cash, cash equivalents and restricted cash	(2,166)	26,097
Cash, cash equivalents and restricted cash at beginning of period	486,512	212,824
Cash, cash equivalents and restricted cash at end of period	484,346	238,921
Supplemental non-cash investing and financing activities:
Capital expenditures included in accounts payable	5,398	7,463
Finance leases	23,534	1,904
Reconciliation of cash, cash equivalents and restricted cash at end of period:
Total cash, cash equivalents and restricted cash	$ 484,346	$ 212,824

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of increase in right-of-use asset obtained in exchange for finance lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
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-Paragraph 4
-Subparagraph (g)(2)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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- Definition

Distributions from Equity Method Investment, Net of Equity in Earnings

+ References

No definition available.

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Namespace Prefix:	wen_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Cash outflow (inflow) for notes receivable, net, for investing activities

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No definition available.

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Namespace Prefix:	wen_
Data Type:	xbrli:monetaryItemType
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- Definition

Total deferred cash receipt for vendor incentives, net of amounts recognized

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No definition available.

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Namespace Prefix:	wen_
Data Type:	xbrli:monetaryItemType
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- Definition

Non-cash rent expense (income)

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No definition available.

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Data Type:	xbrli:monetaryItemType
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- Definition

Operating Lease, Payments Applied To Lease Liabilities

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No definition available.

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- Definition

Operating cash flows associated with long-term debt activities including non-cash financing and payments for debt extinguishment and cash flow hedges.

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No definition available.

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