Additional interest charges for note repurchase premiums and the write-off of unamortized finance fees.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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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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Weighted average interest rate of debt outstanding.

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Gross amount of debt extinguished.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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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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Amount of long-term debt and lease obligation, including portion classified as current.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Debt (Details) $ / shares in Units, € in Millions, $ in Millions	1 Months Ended				3 Months Ended	9 Months Ended
	Aug. 31, 2020 USD ($)	May 31, 2020 USD ($)	Nov. 30, 2019 EUR (€)	Jul. 31, 2019 EUR (€)	Sep. 30, 2020 USD ($) item $ / shares	Sep. 30, 2020 USD ($) item agreement $ / shares	Dec. 31, 2021 item	Jun. 30, 2021 item	Sep. 30, 2020 EUR (€) item	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 EUR (€)
Debt Instrument
Total long-term debt					$ 5,296	$ 5,296				$ 5,484		$ 5,814
Less amounts due within one year					133	133				49		302
Long-term debt					$ 5,163	$ 5,163				5,435		5,512
Number financial maintenance covenants \| agreement						1
Maximum Leverage Ratio may increase \| item						0.5
Maximum
Debt Instrument
Leverage Ratio \| item					5.0	5.0			5.0
Maximum Borrowing Capacity					$ 3,000	$ 3,000
Maximum \| Forecast
Debt Instrument
Leverage Ratio \| item							4.50	4.75
Secured Credit Agreement
Debt Instrument
Unused Credit					$ 1,295	$ 1,295
Weighted average interest rate (as a percent)					1.63%	1.63%			1.63%
Secured Credit Agreement \| Minimum
Debt Instrument
Interest rate margin, Eurocurrency Rate loans (as a percent)					1.00%	1.00%			1.00%
Interest rate margin, Base Rate loans (as a percent)						0.00%
Secured Credit Agreement \| Maximum
Debt Instrument
Interest rate margin, Eurocurrency Rate loans (as a percent)					1.50%	1.50%			1.50%
Interest rate margin, Base Rate loans (as a percent)						0.50%
Revolving Loans
Debt Instrument
Total long-term debt					$ 195	$ 195						265
Term Loan A
Debt Instrument
Total long-term debt					1,157	1,157				1,477		1,496
Face Value					1,500	1,500
Net proceeds, after deducting debt issuance costs						1,157
Other secured debt
Debt Instrument
Total long-term debt					109	109				333		454
Debt redeemed		$ 105
Senior Notes
Debt Instrument
Additional interest charges for note repurchase premiums and write-off of unamortized finance fees					$ 38	$ 38
Senior Notes 6.75%, due 2020 (500 million EUR)
Debt Instrument
Total long-term debt												273	€ 500
Interest rate, stated percentage			6.75%	6.75%	6.75%	6.75%			6.75%
Debt redeemed \| €			€ 250	€ 250
Additional interest charges for note repurchase premiums and write-off of unamortized finance fees					$ 24	$ 24
Senior Notes 4.875%, due 2021 (0 million EUR at September 30, 2020, 118 million EUR December 31, 2019 and 330 million EUR at September 30, 2019)
Debt Instrument
Total long-term debt									€ 0	132	€ 118	360	330
Interest rate, stated percentage		4.875%	4.875%		4.875%	4.875%			4.875%
Debt redeemed		$ 130	€ 212
Senior Notes 5.00%, due 2022
Debt Instrument
Total long-term debt										497		498
Interest rate, stated percentage	5.00%	5.00%			5.00%	5.00%			5.00%
Debt redeemed	$ 81	$ 419
Additional interest charges for note repurchase premiums and write-off of unamortized finance fees	$ 6
Senior Notes 4.00%, due 2023
Debt Instrument
Total long-term debt					$ 307	$ 307				307		307
Interest rate, stated percentage					4.00%	4.00%			4.00%
Fair values of fixed rate debt obligations
Principal Amount					$ 310	$ 310
Indicated Market Price (in dollars per share) \| $ / shares					$ 101.71	$ 101.71
Fair Value					$ 315	$ 315
Senior Notes 5.875%, due 2023
Debt Instrument
Total long-term debt					$ 691	$ 691				689		690
Interest rate, stated percentage					5.875%	5.875%			5.875%
Fair values of fixed rate debt obligations
Principal Amount					$ 700	$ 700
Indicated Market Price (in dollars per share) \| $ / shares					$ 105.64	$ 105.64
Fair Value					$ 739	$ 739
Senior Notes 3.125%, due 2024 (725 million EUR)
Debt Instrument
Total long-term debt					$ 873	$ 873			€ 725	824	725	818	€ 725
Interest rate, stated percentage					3.125%	3.125%			3.125%
Fair values of fixed rate debt obligations
Principal Amount					$ 851	$ 851
Indicated Market Price (in dollars per share) \| $ / shares					$ 101.22	$ 101.22
Fair Value					$ 861	$ 861
Senior Notes 6.375%, due 2025
Debt Instrument
Total long-term debt					$ 296	$ 296				295		296
Interest rate, stated percentage					6.375%	6.375%			6.375%
Fair values of fixed rate debt obligations
Principal Amount					$ 300	$ 300
Indicated Market Price (in dollars per share) \| $ / shares					$ 109.17	$ 109.17
Fair Value					$ 328	$ 328
Senior Notes, 5.375% due 2025
Debt Instrument
Total long-term debt					$ 298	$ 298				297		298
Interest rate, stated percentage					5.375%	5.375%			5.375%
Fair values of fixed rate debt obligations
Principal Amount					$ 300	$ 300
Indicated Market Price (in dollars per share) \| $ / shares					$ 106.35	$ 106.35
Fair Value					$ 319	$ 319
Senior Notes 2.875%, due 2025 (500 million EUR)
Debt Instrument
Total long-term debt			€ 500		$ 579	$ 579			€ 500	552	€ 500
Interest rate, stated percentage			2.875%		2.875%	2.875%			2.875%
Net proceeds, after deducting debt issuance costs \| €			€ 492
Fair values of fixed rate debt obligations
Principal Amount					$ 587	$ 587
Indicated Market Price (in dollars per share) \| $ / shares					$ 99.19	$ 99.19
Fair Value					$ 582	$ 582
Senior Notes 6.625%, due 2027
Debt Instrument
Total long-term debt		$ 700			$ 691	$ 691
Interest rate, stated percentage		6.625%			6.625%	6.625%			6.625%
Net proceeds, after deducting debt issuance costs		$ 690
Fair values of fixed rate debt obligations
Principal Amount					$ 700	$ 700
Indicated Market Price (in dollars per share) \| $ / shares					$ 108.48	$ 108.48
Fair Value					$ 759	$ 759
Finance leases
Debt Instrument
Total long-term debt					94	94				70		43
Other
Debt Instrument
Total long-term debt					6	6				$ 11		$ 16
Revolving Credit Facility
Debt Instrument
Total long-term debt					300	$ 300
Additional default interest rate per annum applied to all obligations owed under the Agreement						2.00%
Revolving Credit Facility \| Minimum
Debt Instrument
Facility fee payable (as a percent)						0.20%
Revolving Credit Facility \| Maximum
Debt Instrument
Facility fee payable (as a percent)						0.30%
Multicurrency Revolving Credit Facility
Debt Instrument
Total long-term debt					$ 1,200	$ 1,200