Share-Based Payments Non-vested (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 29, 2012
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)	0.6
Granted (in shares)	0.4
Vested (in shares)	(0.2)
Forfeited (in shares)	0
Non-vested awards outstanding at the end of the period (in shares)	0.8
Non-vested, weighted-average grant date fair value at the beginning of the period (in dollars per unit)	$ 43.35
Granted, weighted-average grant date fair value (in dollars per unit)	$ 42.02
Vested, weighted-average grant date fair value (in dollars per unit)	$ 42.50
Forfeited, weighted-average grant date fair value (in dollars per unit)	$ 43.38
Non-vested, weighted-average grant date fair value at the end of the period (in dollars per unit)	$ 43.07
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)	2.0
Granted (in shares)	0.7
Vested (in shares)	(0.7)
Forfeited (in shares)	(0.1)
Non-vested awards outstanding at the end of the period (in shares)	1.9
Non-vested, weighted-average grant date fair value at the beginning of the period (in dollars per unit)	$ 11.67
Granted, weighted-average grant date fair value (in dollars per unit)	$ 14.35
Vested, weighted-average grant date fair value (in dollars per unit)	$ 10.92
Forfeited, weighted-average grant date fair value (in dollars per unit)	$ 10.97
Non-vested, weighted-average grant date fair value at the end of the period (in dollars per unit)	$ 10.98