20072006
Financial Instrument [Line Items]Financial Instrument [Line Items]
Financial Instrument, Carrying ValueFinancial Instrument, Fair ValueFinancial Instrument, Carrying ValueFinancial Instrument, Fair Value
Dealer Remarketable Securities, 350 Million Dollars [Member]350,000,000368,000,000350,000,000358,000,000
Convertible Notes, 252 Million Dollars [Member]222,000,000212,000,000542,000,000568,000,000
Remaining Long-term Debt [Member]3,797,000,0003,796,000,0001,047,000,0001,054,000,000
Financial Instrument, Description [Domain]