Pension Benefits Fair Value of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	$ 307	$ 438
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	12	13
Equity mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	6	33
Bond mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	110	216
Real estate trust funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	36	35
Private debt funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	17
Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	2	4
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	59	56
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	37	41
Hedge Funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets		11
Bank Time Deposits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	28	29
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	100	110
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	4	13
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Bond mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate trust funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Private debt funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	59	56
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	37	41
Quoted Prices in Active Markets for Identical Assets (Level 1) | Hedge Funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets		0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Bank Time Deposits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	152	278
Significant Observable Inputs (Level 2) | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	8	0
Significant Observable Inputs (Level 2) | Equity mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	6	33
Significant Observable Inputs (Level 2) | Bond mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	110	216
Significant Observable Inputs (Level 2) | Real estate trust funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | Private debt funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0
Significant Observable Inputs (Level 2) | Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Observable Inputs (Level 2) | Hedge Funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets		0
Significant Observable Inputs (Level 2) | Bank Time Deposits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	28	29
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	55	50
Significant Unobservable Inputs (Level 3) | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Equity mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Bond mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Real estate trust funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	36	35	$ 34
Significant Unobservable Inputs (Level 3) | Private debt funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	17	0	0
Significant Unobservable Inputs (Level 3) | Insurance contracts
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	2	4	7
Significant Unobservable Inputs (Level 3) | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Significant Unobservable Inputs (Level 3) | Hedge Funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	11	$ 9
Significant Unobservable Inputs (Level 3) | Bank Time Deposits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	$ 0	$ 0