XML 26 R15.htm IDEA: XBRL DOCUMENT
v3.20.2

Investment in Persol Holdings | 6 Months Ended
--- | ---
Jun. 28, 2020
Investment in Persol Holdings [Abstract] |
Investment in Persol Holdings | Investment in Persol HoldingsThe Company has a yen-denominated investment through the Company's subsidiary, Kelly Services Japan, Inc., in the common stock of Persol Holdings Co., Ltd. ("Persol Holdings"), the Company’s joint venture partner in PersolKelly Pte. Ltd. (the "JV"). As our investment is a noncontrolling interest in Persol Holdings, this investment is recorded at fair value based on the quoted market price of Persol Holdings stock on the Tokyo Stock Exchange as of the period end (see Fair Value Measurements footnote). A gain on the investment of $29.6 million and a loss on the investment of $48.2 million in the second quarter and June year to date 2020, respectively, and a gain on the investment of $61.2 million and $74.4 million in the second quarter and June year to date 2019, respectively, was recorded in gain (loss) on investment in Persol Holdings in the consolidated statements of earnings.

X
- Definition Investment in Persol Holdings [Abstract] + References No definition available. + Details
Name: | kelya_InvestmentinPersolHoldingsAbstract
Namespace Prefix: | kelya_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 + Details
Name: | us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration