Fair Value Measurements (Assets and Liabilities at Fair Value on Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Jun. 14, 2014		Dec. 28, 2013
Total [Member]
Assets:
Total	$ 2,086.5		$ 3,969.6
Liabilities:
Total	2.7		2.9
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Total	1,069.1		491.0
Liabilities:
Total	0		0
Significant Observable Inputs (Level 2) [Member]
Assets:
Total	1,017.4		3,478.6
Liabilities:
Total	0		0
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Total	0		0
Liabilities:
Total	2.7		2.9
Prepaid Expenses and Other Current Assets [Member] | Total [Member]
Assets:
Investments	71.2	[1]	81.0	[1]
Prepaid Expenses and Other Current Assets [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Investments	35.9	[1]	42.0	[1]
Prepaid Expenses and Other Current Assets [Member] | Significant Observable Inputs (Level 2) [Member]
Assets:
Investments	35.3	[1]	39.0	[1]
Prepaid Expenses and Other Current Assets [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Investments	0	[1]	0	[1]
Other Assets [Member] | Total [Member]
Assets:
Investments	42.7	[2]	38.0	[2]
Other Assets [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Investments	0	[2]	0	[2]
Other Assets [Member] | Significant Observable Inputs (Level 2) [Member]
Assets:
Investments	42.7	[2]	38.0	[2]
Other Assets [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Investments	0	[2]	0	[2]
Other Accrued Liabilities, Accrued Claims and Other Liabilities [Member] | Total [Member]
Liabilities:
Contingent consideration	2.7	[3]	2.9	[3]
Other Accrued Liabilities, Accrued Claims and Other Liabilities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Liabilities:
Contingent consideration	0	[3]	0	[3]
Other Accrued Liabilities, Accrued Claims and Other Liabilities [Member] | Significant Observable Inputs (Level 2) [Member]
Liabilities:
Contingent consideration	0	[3]	0	[3]
Other Accrued Liabilities, Accrued Claims and Other Liabilities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Liabilities:
Contingent consideration	2.7	[3]	2.9	[3]
Term deposits [Member] | Total [Member]
Assets:
Cash equivalents			2,818.0
Term deposits [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Cash equivalents			0
Term deposits [Member] | Significant Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents			2,818.0
Term deposits [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Cash equivalents			0
Money market [Member] | Total [Member]
Assets:
Cash equivalents	1,033.2		449.0
Money market [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Cash equivalents	1,033.2		449.0
Money market [Member] | Significant Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents	0		0
Money market [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Cash equivalents	0		0
Bankers' acceptances [Member] | Total [Member]
Assets:
Cash equivalents			309.6
Bankers' acceptances [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Cash equivalents			0
Bankers' acceptances [Member] | Significant Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents			309.6
Bankers' acceptances [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Cash equivalents			0
Commercial paper [Member] | Total [Member]
Assets:
Cash equivalents	939.1		274.0
Commercial paper [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Cash equivalents	0		0
Commercial paper [Member] | Significant Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents	939.1		274.0
Commercial paper [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Cash equivalents	0		0
Other [Member] | Total [Member]
Assets:
Cash equivalents	0.3
Other [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Cash equivalents	0
Other [Member] | Significant Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents	0.3
Other [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Cash equivalents	$ 0

[1] Included in Prepaid Expenses and Other Current Assets on the balance sheet.

[2] Included in Other Assets on the balance sheet.

[3] Included in Other Accrued Liabilities and Accrued Claims and Other Liabilities on the balance sheet.