Long-Term Debt and Financing Arrangements (Detail) - USD ($) $ in Millions	Oct. 03, 2015	Jan. 03, 2015
Debt Instrument [Line Items]
Derivative, Notional Amount		$ 950.0
Long-term debt fair value adjustment	$ 13.5
Commercial paper borrowings outstanding	449.5	0.0
Commercial paper borrowings capacity	2,000.0
Long-term Debt, Gross	3,852.3	3,845.7
Less: Current maturities of long-term debt	(5.0)	(5.9)
Long-term debt	$ 3,847.3	$ 3,839.8
Convertible notes payable due in 2018 (junior subordinated)
Debt Instrument [Line Items]
Stated interest rate	4.25%	4.25%
Long-term Debt, Gross	$ 632.5	$ 632.5
Notes 2 Point 25 Percent due 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate	2.25%
Long-term debt, interest rate		2.25%
Long-term Debt, Gross	$ 345.0	$ 345.0
Notes payable due 2021
Debt Instrument [Line Items]
Stated interest rate	3.40%
Long-term debt, interest rate		3.40%
Long-term Debt, Gross	$ 412.6	$ 403.9
Notes Payable due 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 753.8	$ 753.8
Notes Payable Maturities 2022 [Member]
Debt Instrument [Line Items]
Stated interest rate	2.90%
Long-term debt, interest rate		2.90%
Notes payable due 2028
Debt Instrument [Line Items]
Stated interest rate	7.05%
Long-term debt, interest rate		7.05%
Long-term Debt, Gross	$ 168.7	$ 166.0
Notes payable due 2040
Debt Instrument [Line Items]
Stated interest rate	5.20%
Long-term debt, interest rate		5.20%
Long-term Debt, Gross	$ 363.2	$ 362.1
Notes 5 Point 75 Percent Due 2052 [Member]
Debt Instrument [Line Items]
Stated interest rate	5.75%
Long-term debt, interest rate		5.75%
Long-term Debt, Gross	$ 750.0	$ 750.0
Notes 5 Point 75 Percent due 2053 [Member]
Debt Instrument [Line Items]
Stated interest rate	5.75%	5.75%
Long-term debt, interest rate		5.75%
Long-term Debt, Gross	$ 407.7	$ 398.7
Other, payable in varying amounts through 2021
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 18.8	$ 33.7
Other, payable in varying amounts through 2021 \| Minimum [Member]
Debt Instrument [Line Items]
Stated interest rate	0.00%	0.00%
Other, payable in varying amounts through 2021 \| Maximum [Member]
Debt Instrument [Line Items]
Stated interest rate	0.19%	6.62%
New Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 1,500.0
Fixed to Floating Interest Rate Swap \| Notes payable due 2021
Debt Instrument [Line Items]
Debt instrument, face amount	400.0
Fixed to Floating Interest Rate Swap \| Notes payable due 2028
Debt Instrument [Line Items]
Debt instrument, face amount	150.0
Fixed to Floating Interest Rate Swap \| Notes payable due 2040
Debt Instrument [Line Items]
Debt instrument, face amount	$ 400.0
Cash Flow Hedges \| Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Notional Amount		$ 400.0

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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