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

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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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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Gross amount of debt extinguished.

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Debt Debt (Summary of long-term debt maturities) (Details) $ in Millions, ¥ in Billions	1 Months Ended				3 Months Ended
	Aug. 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Mar. 31, 2017 JPY (¥)	Jan. 01, 2017 USD ($)	Sep. 30, 2018 USD ($)	Apr. 01, 2018 USD ($)	Dec. 31, 2017 USD ($)	Oct. 01, 2017 USD ($)	Apr. 02, 2017	Dec. 29, 2013
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months						$ 350.0
Debt redemption, amount					$ 400.0
2018						0.0
2019						1,250.0
2020						500.0
2021						1,000.0
Thereafter						6,448.4
Total						9,548.4			$ 3,955.3
Three Point Seven Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Face value of Senior Notes						$ 500.0		$ 500.0	0.0
Debt Instrument, Term			30 years
Stated Interest Rate						3.75%		3.75%
Three Point Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Face value of Senior Notes						$ 600.0	$ 600.0		0.0
Debt Instrument, Term		10 years
Stated Interest Rate						3.50%	3.50%
PointThreeSevenTwoPercentageYenDenominatedSeniorNotes [Member]
Debt Instrument [Line Items]
Face value of Senior Notes				¥ 85		$ 748.4			755.3
Debt Instrument, Term				7 years
Stated Interest Rate						0.372%				0.372%
Point Eight Seven Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Stated Interest Rate											0.875%
Three Point Eight Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Face value of Senior Notes						$ 1,250.0			0.0
Debt Instrument, Term	7 years
Stated Interest Rate						3.80%
Four Point Zero Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Face value of Senior Notes						$ 750.0			0.0
Debt Instrument, Term	10 years
Stated Interest Rate						4.00%
Four Point Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Face value of Senior Notes						$ 1,000.0			0.0
Debt Instrument, Term	30 years
Stated Interest Rate						4.50%
ForeignExchangeYenDebt [Member] \| Designated as Hedging Instrument [Member]
Debt Instrument [Line Items]
Derivative, Notional Amount						$ 85,000.0
Fair Value, Inputs, Level 2 [Member] \| Three Point Seven Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure						438.0			0.0
Fair Value, Inputs, Level 2 [Member] \| Three Point Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure						576.0			0.0
Fair Value, Inputs, Level 2 [Member] \| PointThreeSevenTwoPercentageYenDenominatedSeniorNotes [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure						743.0			760.0
Fair Value, Inputs, Level 2 [Member] \| Three Point Eight Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure						1,249.0			0.0
Fair Value, Inputs, Level 2 [Member] \| Four Point Zero Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure						754.0			0.0
Fair Value, Inputs, Level 2 [Member] \| Four Point Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure						$ 977.0			$ 0.0