COMMON SHAREHOLDER EQUIT AND NCI (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Shareholders' Equity, Beginning Balance			$ 9,611,528,000
Net Income	129,247,000	173,064,000	367,083,000	403,032,000
Dividends on Common Shares			0
Issuance of Common Shares			0
Other Transcations, Net	0		0
Net Income Attributable to Noncontrolling Interests	1,880,000	2,043,000	3,759,000	3,922,000
Other Comprehensive Income (Loss), Net of Tax	2,814,000	1,429,000	4,524,000	3,385,000
Shareholders' Equity, Ending Balance	9,753,807,000		9,753,807,000
Common Shareholders Equity [Member]
Shareholders' Equity, Beginning Balance	9,723,900,000	9,345,200,000	9,611,500,000	9,237,100,000
Net Income	129,200,000	173,100,000	367,100,000	403,000,000
Dividends on Common Shares	(124,100,000)	(115,600,000)	(247,900,000)	(232,100,000)
Dividends, Preferred Stock	(1,900,000)	(2,000,000)	(3,800,000)	(3,900,000)
Issuance of Common Shares	200,000	300,000	5,400,000	8,800,000
Other Transcations, Net	23,700,000	4,200,000	17,000,000	(9,700,000)
Net Income Attributable to Noncontrolling Interests			0	0
Other Comprehensive Income (Loss), Net of Tax	2,800,000	1,400,000	4,500,000	3,400,000
Shareholders' Equity, Ending Balance	9,753,800,000	9,406,600,000	9,753,800,000	9,406,600,000
Noncontrolling Interest Member
Net Income				0
Dividends on Common Shares				0
Issuance of Common Shares				0
Other Transcations, Net				0
Preferred Stock Member
Shareholders' Equity, Beginning Balance	155,600,000	155,600,000	155,600,000	155,600,000
Net Income			0
Dividends, Preferred Stock	(1,900,000)	(2,000,000)	(3,800,000)	(3,900,000)
Net Income Attributable to Noncontrolling Interests	1,900,000	2,000,000	3,800,000	3,900,000
Shareholders' Equity, Ending Balance	$ 155,600,000	$ 155,600,000	$ 155,600,000	$ 155,600,000