Share-Based Payments Non-vested (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2013
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)	0.7
Granted (in shares)	0.2
Vested (in shares)	(0.1)
Forfeited (in shares)	(0.1)
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)	$ 43.06
Granted, weighted-average grant date fair value (in dollars per unit)	$ 41.42
Vested, weighted-average grant date fair value (in dollars per unit)	$ 43.13
Forfeited, weighted-average grant date fair value (in dollars per unit)	$ 42.92
Non-vested, weighted-average grant date fair value at the end of the period (in dollars per unit)	$ 42.64
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)	1.7
Granted (in shares)	0
Vested (in shares)	(0.6)
Forfeited (in shares)	(0.1)
Non-vested awards outstanding at the end of the period (in shares)	1.0
Non-vested, weighted-average grant date fair value at the beginning of the period (in dollars per unit)	$ 10.90
Granted, weighted-average grant date fair value (in dollars per unit)	$ 0.00
Vested, weighted-average grant date fair value (in dollars per unit)	$ 11.64
Forfeited, weighted-average grant date fair value (in dollars per unit)	$ 7.37
Non-vested, weighted-average grant date fair value at the end of the period (in dollars per unit)	$ 6.45
PSUs [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
Granted (in shares)	0.2
Vested (in shares)	0
Forfeited (in shares)	0
Non-vested awards outstanding at the end of the period (in shares)	0.2
Non-vested, weighted-average grant date fair value at the beginning of the period (in dollars per unit)	$ 0.00
Granted, weighted-average grant date fair value (in dollars per unit)	$ 43.10
Vested, weighted-average grant date fair value (in dollars per unit)	$ 0.00
Forfeited, weighted-average grant date fair value (in dollars per unit)	$ 0.00
Non-vested, weighted-average grant date fair value at the end of the period (in dollars per unit)	$ 43.10