Benefit Obligations (Schedule of Fair Values of Pension Plan Assets) (Details) - USD ($) $ in Millions		Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets, fair value non-financial receivables		$ 11	$ 20
Pension plan assets, fair value non-financial payables		1	17
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[1]	2,100	1,990
Total liabilities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(28)	(13)
Swaps [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(28)	(13)
Defined Benefit Plan, Equity Securities, Non-US [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		111	126
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		14	12
Total plan assets [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[2]	2,128	2,003
Equities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		389	431
Swaps [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		28	13
Corporate Debt [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		630	624
Treasuries, Other Debt [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		1,089	1,055
Mortgage Backed Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		16	14
Registered Investment Companies [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		29	34
Short-term Investments [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		24	35
Insurance Contracts [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		118	109
Other [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		24	24
Defined Benefit Plan, Equity Securities, US | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		98	26
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[1]	280	214
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Total liabilities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Swaps [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Defined Benefit Plan, Equity Securities, Non-US [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		111	126
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		14	12
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Total plan assets [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[2]	280	214
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Swaps [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Debt [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Treasuries, Other Debt [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		54	47
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage Backed Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Insurance Contracts [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		3	3
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Defined Benefit Plan, Equity Securities, US | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		98	26
Significant Other Observable Inputs (Level 2) [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[1]	1,820	1,776
Significant Other Observable Inputs (Level 2) [Member] | Total liabilities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(28)	(13)
Significant Other Observable Inputs (Level 2) [Member] | Swaps [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		(28)	(13)
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Plan, Equity Securities, Non-US [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		0	0
Significant Other Observable Inputs (Level 2) [Member] | Total plan assets [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets	[2]	1,848	1,789
Significant Other Observable Inputs (Level 2) [Member] | Swaps [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		28	13
Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		630	624
Significant Other Observable Inputs (Level 2) [Member] | Treasuries, Other Debt [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		1,035	1,008
Significant Other Observable Inputs (Level 2) [Member] | Mortgage Backed Securities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		16	14
Significant Other Observable Inputs (Level 2) [Member] | Insurance Contracts [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		118	109
Significant Other Observable Inputs (Level 2) [Member] | Other [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		21	21
Significant Other Observable Inputs (Level 2) [Member] | Defined Benefit Plan, Equity Securities, US | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net assets		$ 0	$ 0

[1] Total net assets excludes non-financial plan receivables and payables of $11 million and $1 million, respectively, as of December 31, 2025 and $20 million and $17 million, respectively, as of December 31, 2024. Non-financial items include due to/from broker, interest receivables and accrued expenses.

[2] The fair value of certain investments is measured using NAV per share. These investments are excluded from the fair value hierarchy as follows: Year Ended December 31,20252024(In $ millions)Pooled-type investments389 431 Registered investment companies29 34 Short-term investment funds24 35