Commitments And Contingencies (PHI's Cross-Border Leases) (Details) (USD $)	1 Months Ended	6 Months Ended	12 Months Ended
	Jan. 31, 2011	Jun. 30, 2011	Dec. 31, 2011		Dec. 31, 2010
Investment in finance leases held in trust			$ 1,349,000,000	[1]	$ 1,423,000,000	[1]
Federal and state income tax benefits			510,000,000
Tax payment made	74,000,000
Income tax penalties	1,000,000
Interest expense assessed relating to disallowed deductions	28,000,000
Proceeds from early termination of finance leases held in trust			161,000,000
Termination payment to retire non-recourse debt		423,000,000
Pre-tax gain on early termination of finance leases held in trust		39,000,000
PHI [Member]
Estimated current annual tax benefits			51,000,000
Investment in finance leases held in trust			1,300,000,000
Percentage of disallowed tax benefits associated with leases			100.00%
Additional federal and state taxes			643,000,000
Potential tax liability in the event of a total disallowance			764,000,000
Potential interest on potential tax liability related to disallowed tax benefits			$ 121,000,000
Maximum tax penalty percentage			20.00%

[1] Excludes the credit ratings of collateral posted by the lessees in these transactions.