Long-term Corporate Debt and Borrowing Arrangements (Schedule Of Long-Term Debt) (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Other	$ 22	$ 24
Deferred financing fees	(49)	(48)
Total	4,283	4,210
Less: Short-term debt and current portion of long-term debt	19	19
Long-term debt	$ 4,264	4,191
6.375% Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated interest percentage	6.375%
Long-term debt	$ 0	350
4.125% euro-denominated Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated interest percentage	4.125%
Long-term debt	$ 351	366
5.250% Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated interest percentage	5.25%
Long-term debt	$ 235	375
4.500% euro-denominated Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated interest percentage	4.50%
Long-term debt	$ 293	305
10.500% Senior Secured Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated interest percentage	10.50%
Long-term debt	$ 0	487
4.750% euro-denominated Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated interest percentage	4.75%
Long-term debt	$ 410	428
5.750% Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated interest percentage	5.75%
Long-term debt	$ 725	724
4.750% Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated interest percentage	4.75%
Long-term debt	$ 500	0
5.375% Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument stated interest percentage	5.375%
Long-term debt	$ 600	0
Floating Rate Term Loan \| Loans Payable
Debt Instrument [Line Items]
Long-term debt	$ 1,196	$ 1,199
Aggregate interest rate	2.36%
Floating Rate Term Loan \| Interest rate swaps \| Loans Payable
Debt Instrument [Line Items]
Amount of hedged item	$ 700
Aggregate rate	4.58%
Floating Rate Term Loan \| London Interbank Offered Rate (LIBOR) \| Loans Payable
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%

Amount of short-term and long-term debt and lease obligation.

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