Fair Value Measurements (Carrying Value And Fair Values Of Outstanding Debt) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 8.375% Senior Notes Due In 2017 [Member]	Dec. 31, 2011 8.125% Senior Notes Due In 2018 [Member]	Dec. 31, 2011 Carrying Value [Member]	Jan. 01, 2011 Carrying Value [Member]	Dec. 31, 2011 Carrying Value [Member] 8.375% Senior Notes Due In 2017 [Member]		Jan. 01, 2011 Carrying Value [Member] 8.375% Senior Notes Due In 2017 [Member]		Dec. 31, 2011 Carrying Value [Member] 8.125% Senior Notes Due In 2018 [Member]		Jan. 01, 2011 Carrying Value [Member] 8.125% Senior Notes Due In 2018 [Member]		Jan. 01, 2011 Carrying Value [Member] ABL Facility [Member]	Dec. 31, 2011 Fair Value [Member]	Jan. 01, 2011 Fair Value [Member]	Dec. 31, 2011 Fair Value [Member] 8.375% Senior Notes Due In 2017 [Member]		Jan. 01, 2011 Fair Value [Member] 8.375% Senior Notes Due In 2017 [Member]		Dec. 31, 2011 Fair Value [Member] 8.125% Senior Notes Due In 2018 [Member]		Jan. 01, 2011 Fair Value [Member] 8.125% Senior Notes Due In 2018 [Member]		Jan. 01, 2011 Fair Value [Member] ABL Facility [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding debt			$ 590.0	$ 597.9	$ 215.0	[1]	$ 215.0	[1]	$ 375.0	[1]	$ 375.0	[1]	$ 7.9	$ 635.9	$ 644.7	$ 231.4	[1]	$ 232.7	[1]	$ 404.5	[1]	$ 404.1	[1]	$ 7.9
Interest rate on notes	8.375%	8.125%
Debt instrument maturity period	2017	2018

[1] The fair values are based on the trading levels and bid/offer prices observed by a market participant.