Share-Based Payments Non-vested (Details) (USD $) In Millions, except Per Share data	9 Months Ended
	Sep. 24, 2011
Rsus and Dsus [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested awards outstanding at the beginning of the period (in shares)	0.8
Granted (in shares)	0.3
Vested (in shares)	(0.4)
Forfeited (in shares)	0
Non-vested awards outstanding at the end of the period (in shares)	0.7
Non-vested, weighted-average grant date fair value at the beginning of the period (in dollars per unit)	$ 49.41
Granted, weighted-average grant date fair value (in dollars per unit)	$ 41.09
Vested, weighted-average grant date fair value (in dollars per unit)	$ 53.72
Forfeited, weighted-average grant date fair value (in dollars per unit)	$ 43.92
Non-vested, weighted-average grant date fair value at the end of the period (in dollars per unit)	$ 42.17
PUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested awards outstanding at the beginning of the period (in shares)	2.2
Granted (in shares)	0.6
Vested (in shares)	(0.7)
Forfeited (in shares)	(0.1)
Non-vested awards outstanding at the end of the period (in shares)	2.0
Non-vested, weighted-average grant date fair value at the beginning of the period (in dollars per unit)	$ 9.45
Granted, weighted-average grant date fair value (in dollars per unit)	$ 13.51
Vested, weighted-average grant date fair value (in dollars per unit)	$ 6.98
Forfeited, weighted-average grant date fair value (in dollars per unit)	$ 11.22
Non-vested, weighted-average grant date fair value at the end of the period (in dollars per unit)	$ 11.62