Employee Benefits (Schedule Of Fair Value Of Pension Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
United States
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 415	$ 562
United States | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	151	282
United States | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	264	280
United States | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	370	21
Foreign Plan | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7	6
Foreign Plan | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	354	15
Foreign Plan | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	9	0
Pension Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	415	562	$ 563
Pension Plan | Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	370	21	$ 21
Cash and Cash Equivalents | United States
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and Cash Equivalents | United States | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and Cash Equivalents | United States | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and Cash Equivalents | United States | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and Cash Equivalents | Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7	6
Cash and Cash Equivalents | Foreign Plan | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7	6
Cash and Cash Equivalents | Foreign Plan | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and Cash Equivalents | Foreign Plan | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Large-Cap Mutual Funds | United States | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	132	187
Large-Cap Mutual Funds | United States | Level 1 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42	62
Large-Cap Mutual Funds | United States | Level 2 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	90	125
Large-Cap Mutual Funds | United States | Fair Value, Inputs, Level 3 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Large-Cap Mutual Funds | Foreign Plan | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	2
Large-Cap Mutual Funds | Foreign Plan | Level 1 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Large-Cap Mutual Funds | Foreign Plan | Level 2 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1	2
Large-Cap Mutual Funds | Foreign Plan | Fair Value, Inputs, Level 3 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Small-Cap Mutual Funds | United States | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10	14
Small-Cap Mutual Funds | United States | Level 1 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Small-Cap Mutual Funds | United States | Level 2 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10	14
Small-Cap Mutual Funds | United States | Fair Value, Inputs, Level 3 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Small-Cap Mutual Funds | Foreign Plan | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Small-Cap Mutual Funds | Foreign Plan | Level 1 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Small-Cap Mutual Funds | Foreign Plan | Level 2 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Small-Cap Mutual Funds | Foreign Plan | Fair Value, Inputs, Level 3 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
International Mutual Funds | United States | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	96	126
International Mutual Funds | United States | Level 1 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	72	93
International Mutual Funds | United States | Level 2 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	24	33
International Mutual Funds | United States | Fair Value, Inputs, Level 3 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
International Mutual Funds | Foreign Plan | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	73	4
International Mutual Funds | Foreign Plan | Level 1 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
International Mutual Funds | Foreign Plan | Level 2 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	73	4
International Mutual Funds | Foreign Plan | Fair Value, Inputs, Level 3 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Bond Mutual Funds | United States | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	165	226
Bond Mutual Funds | United States | Level 1 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	37	127
Bond Mutual Funds | United States | Level 2 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	128	99
Bond Mutual Funds | United States | Fair Value, Inputs, Level 3 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Bond Mutual Funds | Foreign Plan | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	280	9
Bond Mutual Funds | Foreign Plan | Level 1 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Bond Mutual Funds | Foreign Plan | Level 2 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	280	9
Bond Mutual Funds | Foreign Plan | Fair Value, Inputs, Level 3 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Short Term Investment Funds | United States | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12	9
Short Term Investment Funds | United States | Level 1 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Short Term Investment Funds | United States | Level 2 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12	9
Short Term Investment Funds | United States | Fair Value, Inputs, Level 3 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Short Term Investment Funds | Foreign Plan | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Short Term Investment Funds | Foreign Plan | Level 1 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Short Term Investment Funds | Foreign Plan | Level 2 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Short Term Investment Funds | Foreign Plan | Fair Value, Inputs, Level 3 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	$ 0
Group Insurance Policy | United States | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Group Insurance Policy | United States | Level 1 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Group Insurance Policy | United States | Level 2 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Group Insurance Policy | United States | Fair Value, Inputs, Level 3 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Group Insurance Policy | Foreign Plan | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	9
Group Insurance Policy | Foreign Plan | Level 1 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Group Insurance Policy | Foreign Plan | Level 2 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Group Insurance Policy | Foreign Plan | Fair Value, Inputs, Level 3 | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 9