For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Disaggregation of Revenue [Line Items]
Revenue recognized, included in beginning deferred contract liability balance	$ 8	$ 10	$ 15	$ 18
SleepIQ Technology
Disaggregation of Revenue [Line Items]
Estimated product life			4 years 6 months
Transferred at Point in Time \| Revenue from Contract with Customer Benchmark \| Timing of Transfer of Goods or Services Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue recognized at a point in time	98.00%	97.00%	98.00%	97.00%