Business Combinations (Fair Value Of Assets Acquired And Liabilities Assumed) (Details) (Katz Group [Member], USD $) In Millions, unless otherwise specified	Mar. 25, 2012
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Goodwill Amount	$ 506
Amounts Previously Recognized As Of Acquisition Date (Provisional) [Member]
Business Acquisition [Line Items]
Current assets, net of cash acquired	33	[1]
Business Acquisition, Purchase Price Allocation, Goodwill Amount	506	[1]
Intangible assets	441	[1]
Other long-term assets	15	[1]
Current liabilities	(37)	[1]
Long-term deferred tax liabilities	(39)	[1]
Purchase Price, Less Cash and Cash Equivalents	$ 919	[1]

[1] As previously reported in our Form 10-K for the year ended March 31, 2012.