Income Taxes (Deferred Tax Balances) (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets (liabilities):
Intangible assets	[1]	$ (499)	$ (471)
Property and equipment		(30)	(25)
Operating lease right-of-use asset		(30)
Prepaid expenses and deferred customer acquisition costs		(25)	(20)
Receivables allowances		6	5
Self-insured claims and related expenses		2	7
Accrued liabilities		35	22
Other long-term obligations		4	(6)
Current portion of lease liability and long-term lease liability		32
Net operating loss and tax credit carryforwards		16	15
Less valuation allowance		(12)	(11)
Net Deferred taxes		(501)	(484)
Deferred tax liability related primarily to the difference in the tax versus book basis of intangible assets		$ 505	$ 505

[1] The deferred tax liability relates primarily to the difference in the tax versus book basis of intangible assets. As of both December 31, 2019 and December 31, 2018, we had $505 million of deferred tax liability included in this net deferred tax liability, that will not actually be paid unless certain business units of the Company are sold.