Stockholders' Equity (Conversion Features) (Details) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 29, 2016 USD ($) $ / shares
Stockholders' Equity
Conversion threshold minimum proceeds from initial public offering issuance \| $	$ 75.0
Conversion threshold minimum public offering price per share	$ 1,000
Conversion threshold minimum public offering price per share adjusted by dividends	$ 916

Per share amount of equity securities issued to meet conversion threshold as adjusted by dividends or other distributions.

No definition available.

Name:	fnd_ConversionThresholdMinimumAdjustedPublicOfferingPricePerShare
Namespace Prefix:	fnd_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration