Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions			12 Months Ended
	Dec. 19, 2024	Oct. 24, 2018	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Aug. 31, 2025	Jun. 17, 2021
Debt Instrument [Line Items]
Available borrowing capacity			$ 248
Loss on extinguishment of debt			(3)	$ 0	$ 0
Letter of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding			2
Credit Facilities [Member]
Debt Instrument [Line Items]
Write-off of unamortized debt issuance costs			3
Loss on extinguishment of debt			$ (3)
Credit Facilities [Member] | Maximum [Member] | Alternative Base Rate [Member]
Debt Instrument [Line Items]
Borrowing margin (as a percent)			1.00%
Credit Facilities [Member] | Maximum [Member] | SOFR [Member]
Debt Instrument [Line Items]
Borrowing margin (as a percent)			2.00%
Credit Facilities [Member] | Minimum [Member] | Alternative Base Rate [Member]
Debt Instrument [Line Items]
Borrowing margin (as a percent)			0.50%
Credit Facilities [Member] | Minimum [Member] | SOFR [Member]
Debt Instrument [Line Items]
Borrowing margin (as a percent)			1.50%
Term Loan A Maturing In 2026 [Member]
Debt Instrument [Line Items]
Cost of debt purchased			$ 218
Facility maturity date			Jun. 17, 2026
Maximum borrowing capacity							$ 260
Term Loan B Maturing In 2028 [Member]
Debt Instrument [Line Items]
Cost of debt purchased			$ 368
Facility maturity date			Jun. 17, 2028
Maximum borrowing capacity							380
Term Loan B Maturing In 2028 [Member] | Alternative Base Rate [Member]
Debt Instrument [Line Items]
Borrowing margin (as a percent)				1.25%
Term Loan B Maturing In 2028 [Member] | SOFR [Member]
Debt Instrument [Line Items]
Borrowing margin (as a percent)				2.25%
Term Loan A Maturing In 2029 [Member]
Debt Instrument [Line Items]
Facility maturity date			Dec. 19, 2029
Maximum borrowing capacity	$ 418
Term Loan B Maturing In 2031 [Member]
Debt Instrument [Line Items]
Facility maturity date			Dec. 19, 2031
Maximum borrowing capacity	800
Revolving Credit Facility Maturing In 2029 [Member]
Debt Instrument [Line Items]
Facility maturity date			Dec. 19, 2029
Maximum borrowing capacity	250
Term Loan A [Member]
Debt Instrument [Line Items]
Percentage of principal amount paid for quarterly installment payments			5.00%
Term Loan B [Member]
Debt Instrument [Line Items]
Percentage of principal amount paid for quarterly installment payments			1.00%
Revolving Credit Facility Maturing In 2026 [Member]
Debt Instrument [Line Items]
Facility maturity date			Jun. 17, 2026
Maximum borrowing capacity							$ 250
Line of Credit Facility, Amount Outstanding	$ 2
Interest rate swap contracts
Debt Instrument [Line Items]
Notional amount		$ 350	$ 299
Weighted Average Fixed Rate (as a percent)	4.14%	3.028%
Derivative, Basis Spread on Variable Rate	2.25%	2.25%
Derivative, basis spread floor percent	0.00%	0.00%
Interest rate swap contracts | Forecast [Member]
Debt Instrument [Line Items]
Notional amount						$ 350