Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Apr. 01, 2018
Cash flows from operating activities:
Net income	$ 31,894	$ 20,159
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	33,185	32,152
Share-based compensation	5,022	4,458
Impairment of long-lived assets	1,486	206
Deferred income tax	842	(9,799)
Non-cash rental expense (income), net	7,818	(3,239)
Change in operating lease liabilities	(10,496)	0
Net receipt of deferred vendor incentives	8,033	7,340
System optimization (gains) losses, net	(12)	570
Distributions received from joint ventures, net of equity in earnings	415	1,083
Long-term debt-related activities, net	1,823	13,215
Changes in operating assets and liabilities and other, net	(17,989)	2,566
Net cash provided by operating activities	62,021	68,711
Cash flows from investing activities:
Capital expenditures	(11,215)	(10,569)
Acquisitions	(5,052)	0
Dispositions	0	351
Proceeds from sale of investments	130	0
Notes receivable, net	248	(872)
Payments for investments	0	(12)
Net cash used in investing activities	(15,889)	(11,102)
Cash flows from financing activities:
Proceeds from long-term debt	0	928,167
Repayments of long-term debt	(5,813)	(870,394)
Repayments of finance lease liabilities	(1,881)	(1,353)
Deferred financing costs	0	(17,340)
Repurchases of common stock	(30,929)	(39,372)
Dividends	(23,069)	(20,355)
Proceeds from stock option exercises	5,196	9,385
Payments related to tax withholding for share-based compensation	(6,055)	(8,321)
Contingent consideration payment	0	(6,100)
Net cash used in financing activities	(62,551)	(25,683)
Net cash (used in) provided by operations before effect of exchange rate changes on cash	(16,419)	31,926
Effect of exchange rate changes on cash	1,884	(2,482)
Net (decrease) increase in cash, cash equivalents and restricted cash	(14,535)	29,444
Cash, cash equivalents and restricted cash at beginning of period	486,512	212,824
Cash, cash equivalents and restricted cash at end of period	471,977	242,268
Supplemental non-cash investing and financing activities:
Capital expenditures included in accounts payable	5,125	6,466
Finance leases	13,810	1,101
Reconciliation of cash, cash equivalents and restricted cash at end of period:
Total cash, cash equivalents and restricted cash	$ 486,512	$ 212,824

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2A
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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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-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

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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
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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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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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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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- 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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