Employee Benefit Plans (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Employee Benefit Plans [Line Items]
Percentage match of eligible compensation contributed to investment selection		25.00%
Percentage of eligible compensation contributed to investment selection for which matching contribution is made		2.00%
Total accumulated benefit obligation		$ 832,303	$ 692,601
Fair values of plan assets total		525,471
Number of plans		3	2
Fair value of plan assets exceeding accumulated benefit obligations		487,673	440,422
Transition obligation expense period, years		20
Defined benefit plan, ultimate trend rate		4.50%
Defined benefit plan, year of ultimate trend rate		2028
Increase in accumulated postretirement benefit obligation due to one percentage point increase in this rate		696
Decrease in accumulated postretirement benefit obligation due to one percentage point decrease in this rate		642
Profit share expense		25,100	30,025	21,100
U.S. Pension Plans [Member]
Employee Benefit Plans [Line Items]
Defined Benefit Plan, Contributions by Employer		31,500
Fair values of plan assets total		441,426	389,286
Individual pension plan as a percentage of consolidate pension plan		84.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets		8.90%	8.90%	8.90%
Percentage of assumed average rate of return in equity securities		80.00%
Percentage of assumed average rate of return in fixed income securities		20.00%
Assumptions for benefit obligations, Discount rate		3.70%	4.70%	5.20%
Assumptions for net periodic benefit cost, Discount rate		4.70%	5.20%	6.00%
Three Plan Member [Member]
Employee Benefit Plans [Line Items]
Fair value of plan assets exceeding accumulated benefit obligations		37,798
Accumulated benefit obligation of plans with fair value exceeding accumulated benefit obligation		33,438
Non-U.S. Pension Plans [Member]
Employee Benefit Plans [Line Items]
Defined Benefit Plan, Contributions by Employer		7,300
Fair values of plan assets total		84,044	68,991
Individual pension plan as a percentage of consolidate pension plan		16.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets		5.50%	5.10%	6.00%
Percentage of assumed average rate of return in equity securities		40.00%
Percentage of assumed average rate of return in fixed income securities		60.00%
Assumptions for benefit obligations, Discount rate		3.90%	4.70%	4.60%
Assumptions for net periodic benefit cost, Discount rate		4.70%	4.60%	5.80%
U.K. Pension Plans [Member]
Employee Benefit Plans [Line Items]
Individual pension plan as a percentage of consolidate pension plan		6.00%
Two Plan [Member]
Employee Benefit Plans [Line Items]
Fair value of plan assets exceeding accumulated benefit obligations			17,856
Accumulated benefit obligation of plans with fair value exceeding accumulated benefit obligation			13,746
Medical And Drug Costs Before Age 65 [Member]
Employee Benefit Plans [Line Items]
Annual per capita rate of increase of medical and drug costs		7.60%
Medical Costs After Age 65 [Member]
Employee Benefit Plans [Line Items]
Annual per capita rate of increase of medical and drug costs		6.80%
Drug Costs After Age 65 [Member]
Employee Benefit Plans [Line Items]
Annual per capita rate of increase of medical and drug costs		8.10%
Class A Common Stock [Member]
Employee Benefit Plans [Line Items]
Number of shares owned by the participants under RSP		735,643
Class A Common Stock [Member] | U.S. Pension Plans [Member]
Employee Benefit Plans [Line Items]
Number of stock included in plan assets		149,022
Class B Common Stock [Member]
Employee Benefit Plans [Line Items]
Number of shares owned by the participants under RSP		1,954,685
Class B Common Stock [Member] | U.S. Pension Plans [Member]
Employee Benefit Plans [Line Items]
Number of stock included in plan assets		1,001,034
Postretirement Benefit Plan [Member]
Employee Benefit Plans [Line Items]
Estimated net actuarial loss that will be amortized		0
Estimated net prior service cost that will be amortized		0	0	215
Estimated transition obligation that will be amortized	361	394	394	394
Assumptions for benefit obligations, Discount rate		3.30%	4.50%	4.80%
Assumptions for net periodic benefit cost, Discount rate		4.50%	4.80%	5.50%
Defined Benefit Pension [Member]
Employee Benefit Plans [Line Items]
Estimated net actuarial loss that will be amortized		29,348
Estimated net prior service cost that will be amortized		$ 55