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

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Net average interest rate.

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Number of Applicable Banks and Financial Institutions That Contain Netting Provisions

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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Face (par) amount of debt instrument at time of issuance.

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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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The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Derivative Financial Instruments and Hedging Activities (Narrative) (Details)	1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 30, 2012 USD ($)	Mar. 30, 2013 USD ($)	Jan. 02, 2016 USD ($) bank	Apr. 30, 2013 USD ($)
Derivatives, Fair Value [Line Items]
After tax net unrealized gain on foreign currency forward contracts			$ 7,000,000
Unrealized gains expected to be reclassed to earnings over the next 12 months			$ 7,000,000
Number of applicable banks and financial institutions that contain netting provisions \| bank			4
Senior Notes [Member] \| 2023 Senior Notes [Member]
Derivatives, Fair Value [Line Items]
Face amount of debt		$ 900,000,000		$ 900,000,000
Senior Notes [Member] \| 2043 Senior Notes [Member]
Derivatives, Fair Value [Line Items]
Face amount of debt		700,000,000		$ 700,000,000
Senior Notes [Member] \| 2016 Senior Notes [Member]
Derivatives, Fair Value [Line Items]
Gross notional amount of derivative			$ 500,000,000
Face amount of debt			500,000,000
Proceeds from termination of interest rate swap	$ 24,000,000
Net average interest rate	1.30%
Foreign currency forward contracts [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Gross notional amount of derivative			$ 214,000,000
Foreign currency forward contracts [Member] \| Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Cash flow hedge period			24 months
Gross notional amount of derivative			$ 1,000,000,000
Treasury Lock [Member] \| Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Gain recognized in other comprehensive income		$ 3,000,000