Long-Term Debt (Extinguishment of Debt and Repurchase of Notes Narrative) (Details) - USD ($) shares in Millions					1 Months Ended		3 Months Ended
		Mar. 27, 2019	Mar. 12, 2019	Mar. 01, 2018	Apr. 30, 2019	Mar. 31, 2019	Mar. 31, 2019
Debt Instrument [Line Items]
Loss on extinguishment of debt							$ 6,000,000
Amount borrowed							600,000,000
Gain (Loss) on Investments							40,000,000
Interest Rate Swap Contracts [Member]
Debt Instrument [Line Items]
Derivative, Notional Amount	[1]					$ 209,250,000	209,250,000
Amount Received From Termination Of Interest Rate Swap Agreement		$ 11,000,000
Short-term Credit Facility [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt							$ 4,000,000
Amount borrowed			$ 600,000,000
Repayment of debt			$ 434,000,000
7.10% Notes Maturing In 2018 [Member]
Debt Instrument [Line Items]
Interest rate (as a percent)				7.10%
Repayment of debt				$ 79,000,000
7.25% Notes Maturing In 2038 [Member]
Debt Instrument [Line Items]
Interest rate (as a percent)						7.25%	7.25%
Redemption percentage						99.50%
Face amount of debt instrument						$ 3,000,000	$ 3,000,000
7.45% Notes Maturing In 2027 [Member]
Debt Instrument [Line Items]
Interest rate (as a percent)						7.45%	7.45%
Redemption percentage						105.50%
Face amount of debt instrument						$ 7,000,000	$ 7,000,000
Notes 7.45%, And 7.25% Collectively [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt							$ 2,000,000
Loans Payable [Member] | 7.25% Notes Maturing In 2038 [Member]
Debt Instrument [Line Items]
Interest rate (as a percent)						7.25%	7.25%
Loans Payable [Member] | 7.45% Notes Maturing In 2027 [Member]
Debt Instrument [Line Items]
Interest rate (as a percent)						7.45%	7.45%
Frontdoor, inc. [Member]
Debt Instrument [Line Items]
Debt Conversion, Converted Instrument, Shares Issued		16.7
Percentage of outstanding common share exchanged		19.80%				19.80%	19.80%
Cost of debt purchased		$ 600,000,000
Gain (Loss) on Investments							$ 40,000,000
Subsequent Event [Member] | Notes Maturing 2027, 7.45% [Member]
Debt Instrument [Line Items]
Interest rate (as a percent)					7.45%
Repayment of principal amount					$ 1,000,000
Repayment of debt					38,000,000
Termination Of Interest Rate Swap Agreement					$ 38,000,000
Redemption percentage					105.50%

[1] During the first quarter of 2019, concurrent with the debt-for-equity exchange which reduced our term loan facility by $434 million, we terminated $441 million of our interest rate swap, resulting in a notional amount remaining of $209 million on March 31, 2019.