Derivative Instruments and Hedging Activities (Narrative) (Details) - USD ($)	1 Months Ended	6 Months Ended	12 Months Ended
	Jul. 28, 2016	Jun. 30, 2016	Dec. 31, 2015	Aug. 31, 2015
Derivative [Line Items]
Losses recorded to AOCI			$ 21,600,000
Foreign exchange contracts | Designated as hedging instruments
Derivative [Line Items]
Period to settlement dates of derivatives is within this period		54 months	36 months
Foreign exchange contracts | Derivatives not designated as hedging instruments
Derivative [Line Items]
Notional Amount		$ 901,100,000	$ 920,000,000
Forward Currency and Treasury Locks
Derivative [Line Items]
Notional Amount				$ 2,900,000,000
Forward Starting Interest Rate Swaps
Derivative [Line Items]
Derivative, remaining maturity (years)		10 years	10 years
Foreign Exchange Option Contracts | Designated as hedging instruments
Derivative [Line Items]
Period to settlement dates of derivatives is within this period		54 months	36 months
Interest rate swap agreements | Designated as hedging instruments
Derivative [Line Items]
Gain on settlement of contract		$ 0
Minimum | Foreign exchange contracts
Derivative [Line Items]
Derivative, remaining maturity (years)		3 years
Maximum | Foreign exchange contracts
Derivative [Line Items]
Derivative, remaining maturity (years)		5 years
Subsequent Event
Derivative [Line Items]
Proceeds from derivative settlement	$ 195,600,000
Fair value hedges | Interest rate swap agreements | Designated as hedging instruments
Derivative [Line Items]
Notional Amount		$ 3,600,000,000	$ 3,550,000,000
Fair value hedges | Subsequent Event | Interest rate swap agreements | Designated as hedging instruments
Derivative [Line Items]
Notional Amount	$ 3,600,000,000