Stock Repurchase Programs Stock Repurchase Programs (Details Textual) - USD ($) $ in Millions	Dec. 30, 2017	Jan. 31, 2017
Equity [Abstract]
Authorized amount for share repurchases		$ 525.0
Remaining authorization for share repurchases	$ 425.0

Amount remaining of a stock repurchase plan authorized.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant