Equity (Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Numerator:
Income (loss) from continuing operations for purposes of calculating earnings per share	$ 101,547	$ 115,111	$ (328,657)
Income (loss) from discontinued operations, net of taxes	$ (4,252)	$ (5,545)	$ (8,012)
Denominator:
Weighted average shares outstanding-Basic (in shares)	47,912,135	50,823,063	62,561,294
Effect of dilutive securities:
2.25% senior convertible debentures (in shares)	0	0	0
Stock options and contingently issued restricted stock (in shares)	494,185	495,179	0
Warrants (in shares)	0	0	0
Weighted average shares outstanding-Diluted (in shares)	48,406,320	51,318,242	62,561,294
Basic earnings (loss) per share from continuing operations attributable to common shareowners (in dollars per share)	$ 2.12	$ 2.26	$ (5.25)
Basic earnings (loss) per share from discontinued operations attributable to common shareowners (in dollars per share)	$ (0.09)	$ (0.11)	$ (0.13)
Diluted earnings (loss) per share from continuing operations attributable to common shareowners (in dollars per share)	$ 2.10	$ 2.24	$ (5.25)
Diluted earnings (loss) per share from discontinued operations attributable to common shareowners (in dollars per share)	$ (0.09)	$ (0.11)	$ (0.13)
Stock options
Antidilutive securities excluded from computation of earnings per share amount
Antidilutive securities excluded from computation of earnings per share amount (in shares)	4,590,925	4,249,564	6,594,313
Effect of dilutive securities:
Weighted average shares outstanding-Diluted (in shares)	5,255	703,011	777,740