Debt - Additional Information (Details)										1 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 16, 2020 USD ($)	Jun. 01, 2020 USD ($)	Feb. 27, 2020 USD ($)	Nov. 21, 2019 USD ($)	May 02, 2019 USD ($)	Dec. 07, 2018 USD ($)	Apr. 27, 2018 EUR (€)	Mar. 07, 2018 USD ($)	Oct. 31, 2017 USD ($)	Sep. 30, 2019 USD ($)	Nov. 20, 2019 USD ($)	Oct. 01, 2019 USD ($) Mill
Debt Instrument [Line Items]
Fair value of debt	$ 10,800,000,000										$ 10,600,000,000
DDTL Credit Agreement [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity									$ 3,800,000,000
Senior Notes due June 2033 [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount			$ 600,000,000.0
Debt instrument, interest rate			3.00%
Debt instrument, effective interest rate	3.10%
Debt instrument, maturity year			2033
Debt instrument, discount			$ 1,400,000
Debt instrument, transaction closing date			Jun. 03, 2020
Debt instrument, issuance costs			$ 5,100,000
Notes due June 2020 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	9.75%
Prepayment of outstanding principal amount			$ 100,000,000.0
Revolving Credit Facility [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity	$ 2,300,000,000				$ 2,300,000,000							$ 2,000,000,000.0
Credit facility, maturity date					Nov. 21, 2024
Long-term debt	0										0
Revolving Credit Facility [Member] | Unsecured Debt [Member] | Non-U.S. Dollar Currencies [Member]
Debt Instrument [Line Items]
Capacity available for special purpose					$ 500,000,000							$ 400,000,000
Revolving Credit Facility [Member] | Unsecured Debt [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit facility, maximum permitted debt to capitalization ratio					0.65							0.60
Revolving Credit Facility [Member] | Future Mexican Peso Sub-Facility [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity					$ 200,000,000
Wells Fargo Bank, NA Credit Facility [Member] | Terminated Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity					$ 450,000,000.0
Five Year Term Loan | DDTL Credit Agreement [Member]
Debt Instrument [Line Items]
Prepayment of outstanding principal amount		$ 300,000,000.0		$ 200,000,000.0
Credit Facility, maximum borrowing capacity									$ 1,750,000,000
Long-term debt	$ 898,400,000										$ 1,396,900,000
Debt instrument, maturity period	5 years	5 years		5 years					5 years		5 years
364-Day Term Loan [Member] | DDTL Credit Agreement [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity									$ 300,000,000.0
Long-term debt											$ 0
Debt instrument, maturity period									364 days		364 days
Three Year Term Loan [Member] | DDTL Credit Agreement [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity									$ 1,750,000,000
Long-term debt											$ 0
Debt instrument, maturity period									3 years		3 years
Receivables Securitization Facility [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Long-term debt	$ 0										$ 0
Receivables backed financing, maximum borrowing amount						$ 700,000,000.0
Debt instrument, maturity date						Jul. 22, 2019
Debt instrument, maximum borrowing capacity, amount	700,000,000.0										592,100,000
Loans and Leases Receivable, Collateral for Secured Borrowings	1,134,000,000.0										959,300,000
Debt instrument, amended maturity date						May 02, 2022
Cooperatieve Rabobank U.A., New York Branch European Revolving Credit Facility [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity | €								€ 500,000,000.0
Credit facility, maturity date					Nov. 21, 2022			Apr. 27, 2021
Long-term debt	285,000,000.0										350,000,000.0
Debt instrument, maturity period								3 years
Incremental line of credit | €								€ 100,000,000.0
Line of credit facility, maximum Euro denominated borrowing capacity | €								€ 500,000,000.0
Current portion of long-term debt	0										175,000,000.0
Cooperatieve Rabobank U.A., New York Branch European Revolving Credit Facility [Member] | Unsecured Debt [Member] | Foreign Exchange Contract [Member]
Debt Instrument [Line Items]
Amount of foreign exchange contracts	285,200,000
Commercial Paper [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt	250,000,000.0										250,000,000.0
Aggregate Principal Amount of Short-term Unsecured Commercial Paper Program, Maximum							$ 1,000,000,000.0			$ 1,000,000,000.0
Debt Instrument, notice period for termination							30 days			30 days
Borrowings outstanding	$ 329,900,000										$ 339,200,000
Debt, weighted average interest rate	0.34%										2.39%
Commercial Paper [Member] | Unsecured Debt [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, maturity period							397 days			397 days
Chip Mills [Member]
Debt Instrument [Line Items]
Number of mills recharacterized short-term and long-term liability | Mill													2
Finance lease obligation reclassified from short term and long term liability													$ 100,300,000