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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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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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Debt (Details) $ / shares in Units, € in Millions, $ in Millions	1 Months Ended			12 Months Ended
	Aug. 31, 2020 USD ($)	May 31, 2020 USD ($)	Nov. 30, 2019 EUR (€)	Dec. 31, 2020 USD ($) item agreement $ / shares	Dec. 31, 2019 USD ($)	Dec. 31, 2021 item	Jun. 30, 2021 item	Dec. 31, 2020 EUR (€) item	Dec. 31, 2019 EUR (€)	Jul. 31, 2019 EUR (€)
Debt Instrument
Total long-term debt				$ 5,087	$ 5,484
Less amounts due within one year				142	49
Long-term debt				$ 4,945	5,435
Number financial maintenance covenants \| agreement				1
Maximum Leverage Ratio may increase \| item				0.5
Additional interest charges for related party fees					5
Maximum
Debt Instrument
Leverage Ratio \| item				5.0				5.0
Maximum Borrowing Capacity				$ 3,000
Maximum \| Forecast
Debt Instrument
Leverage Ratio \| item						4.50	4.75
Prior Agreement
Debt Instrument
Additional interest charges for note repurchase premiums and write-off of unamortized finance fees					4
Secured Credit Agreement
Debt Instrument
Unused Credit				$ 1,500
Weighted average interest rate (as a percent)				1.68%				1.68%
Secured Credit Agreement \| Minimum
Debt Instrument
Interest rate margin, Eurocurrency Rate loans (as a percent)				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%
Interest rate margin, Base Rate loans (as a percent)				0.50%
Term Loan A
Debt Instrument
Total long-term debt				$ 1,067	1,477
Face Value				1,500
Increase in long term debt, net of debt issuance costs				1,067
Other secured debt
Debt Instrument
Total long-term debt				$ 99	333
Debt redeemed		$ 105
Senior Notes
Debt Instrument
Additional interest charges for note repurchase premiums and write-off of unamortized finance fees		$ 38
Senior Notes 6.75%, due 2020 (500 million EUR)
Debt Instrument
Total long-term debt \| €			€ 250							€ 250
Interest rate, stated percentage			6.75%							6.75%
Senior Notes 4.875%, due 2021 (118 million EUR at December 31, 2019)
Debt Instrument
Total long-term debt			€ 212		132				€ 118
Interest rate, stated percentage		4.875%	4.875%	4.875%				4.875%
Debt redeemed		$ 130
Senior Notes 5.00%, due 2022
Debt Instrument
Total long-term debt					497
Interest rate, stated percentage	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
Interest rate, stated percentage				4.00%				4.00%
Fair values of fixed rate debt obligations
Principal Amount				$ 310
Indicated Market Price (in dollars per share) \| $ / shares				$ 102.51
Fair Value				$ 318
Senior Notes 5.875%, due 2023
Debt Instrument
Total long-term debt				$ 692	689
Interest rate, stated percentage				5.875%				5.875%
Fair values of fixed rate debt obligations
Principal Amount				$ 700
Indicated Market Price (in dollars per share) \| $ / shares				$ 107.57
Fair Value				$ 753
Senior Notes 3.125%, due 2024 (725 million EUR)
Debt Instrument
Total long-term debt				$ 914	824			€ 725	725
Interest rate, stated percentage				3.125%				3.125%
Fair values of fixed rate debt obligations
Principal Amount				$ 891
Indicated Market Price (in dollars per share) \| $ / shares				$ 103.42
Fair Value				$ 921
Senior Notes 6.375%, due 2025
Debt Instrument
Total long-term debt				$ 296	295
Interest rate, stated percentage				6.375%				6.375%
Fair values of fixed rate debt obligations
Principal Amount				$ 300
Indicated Market Price (in dollars per share) \| $ / shares				$ 111.61
Fair Value				$ 335
Senior Notes, 5.375% due 2025
Debt Instrument
Total long-term debt				$ 298	297
Interest rate, stated percentage				5.375%				5.375%
Fair values of fixed rate debt obligations
Principal Amount				$ 300
Indicated Market Price (in dollars per share) \| $ / shares				$ 107.80
Fair Value				$ 323
Senior Notes 2.875%, due 2025 (500 million EUR)
Debt Instrument
Total long-term debt			€ 500	$ 607	552			€ 500	€ 500
Interest rate, stated percentage			2.875%	2.875%				2.875%
Increase in long term debt, net of debt issuance costs \| €			€ 492
Fair values of fixed rate debt obligations
Principal Amount				$ 614
Indicated Market Price (in dollars per share) \| $ / shares				$ 102.01
Fair Value				$ 626
Senior Notes 6.625%, due 2027
Debt Instrument
Total long-term debt		$ 700		$ 692
Interest rate, stated percentage		6.625%		6.625%				6.625%
Increase in long term debt, net of debt issuance costs		$ 690
Fair values of fixed rate debt obligations
Principal Amount				$ 700
Indicated Market Price (in dollars per share) \| $ / shares				$ 108.78
Fair Value				$ 761
Finance leases
Debt Instrument
Total long-term debt				108	70
Other
Debt Instrument
Total long-term debt				7	11
Revolving Credit Facility
Debt Instrument
Total long-term debt				$ 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
Senior Notes 6.75%, due 2020 and Senior Notes 4.875%, due 2021
Debt Instrument
Additional interest charges for note repurchase premiums and write-off of unamortized finance fees					$ 56