Debt Obligations and Commitments (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 30, 2017
Debt Instrument [Line Items]
Debt Instrument, Repurchase Amount	$ 2,500.0
Gain (Loss) on Extinguishment of Debt	233.0
Extinguishment of Debt, Gain (Loss), Net of Tax	$ 156.0
Extinguishment of Debt, Gain (Loss), Per Share, Net of Tax	$ 0.11
International Divisions
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding		$ 73.0
Notes Due 2017 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	1.40%	0.00%
Notes Due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.30%	2.40%
Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	1.70%	2.10%
Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.60%	3.10%
Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.40%	2.40%
Notes Due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.80%	2.60%
Notes Due 2023 to 2047 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	3.80%	3.70%
Other Debt Instruments due 2018 to 2026 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	1.40%	1.30%
Five-Year Unsecured Revolving Credit Agreement (Five-Year Credit Agreement) [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 3,722.5	$ 3,750.0
Line of Credit Facility, Maximum Borrowing Capacity		$ 4,500.0
Commercial Paper One Point Three Percentage_ [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage		1.30%
Commercial Paper Zero Point Six Percentage_ [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	0.60%
Seven Point Nine Zero Percent Notes Due 2018 [Member] \| Notes Due 2018 [Member]
Debt Instrument [Line Items]
Interest rate on debt	7.90%
Debt Instrument, Repurchased Face Amount	$ 1,500.0
Five Point One Two Five Percent Notes Due 2019 [Member] \| Notes Due 2019 [Member]
Debt Instrument [Line Items]
Interest rate on debt	5.125%
Debt Instrument, Repurchased Face Amount	$ 750.0
364-Day Unsecured Revolving Credit Agreement (364-Day Credit Agreement) [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 3,722.5	$ 3,750.0
Line of Credit Facility, Maximum Borrowing Capacity		$ 4,500.0

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

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value amount of debt instrument that was repurchased.

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Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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The difference between the reacquisition price and the net carrying amount of the extinguished debt recognized currently as a component of income in the period of extinguishment, net of tax.

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Per share impact of the gain (loss) on the extinguishment of debt, net of applicable taxes.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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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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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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