Share-Based Awards (Details - Other Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share Based Compensation Arrangements - Other details
Share based compensation expense	$ 29.8	$ 26.8	$ 24.2
Tax benefit of share-based compensation expense	3.3	3.6	2.4
Tax Benefit Realized from Exercise of Stock Options	7.0	1.6	3.1
Employee Equity Plan [Member]
Employee Equity Plan [Line Items]
Total shares authorized under the plan	8,300,000
Shares remaining for issuance	4,400,000
Maximum individual award in unit terms	500,000
Maximum individual award in dollar terms	5
Share Options and SSARs [Member]
Employee Equity Plan [Line Items]
Total shares authorized under the plan	4,900,000
Vesting period for EEP shares	3 years 0 months 0 days
Shares remaining for issuance	2,800,000
Contractual term, in years	10 years 0 months 0 days
Share Options [Member]
Assumptions:
Expected life		6 years 0 months 0 days	6 years 0 months 0 days
Expected volatility		17.70%	14.90%
Risk-free interest rate		1.00%	2.00%
Dividend yield		2.70%	2.70%
RSUs and PSUs [Member]
Employee Equity Plan [Line Items]
Total shares authorized under the plan	3,400,000
Vesting period for EEP shares	3 years 0 months 0 days
Shares remaining for issuance	1,600,000
Share Based Compensation Arrangements - Other details
Weighted average grant date fair value	$ 89.44
Fair value of units vested	22.8
Unrecognized share-based compensation expense	27.3
Weighted average period of recognition	2 years 0 months 0 days
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Roll Forward
Outstanding at beginning of year	869,495
Granted	329,174
Released	(290,277)
Forfeited	(53,494)
Outstanding at end of year	854,898
RSU [Member]
Share Based Compensation Arrangements - Other details
Weighted average grant date fair value		$ 65.33	$ 81.20
Fair value of units vested		5.5	18.3
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Roll Forward
Granted		294,184	314,182
SSARs [Member]
Share Based Compensation Arrangements - Other details
Weighted average grant date fair value	$ 11.25	$ 7.34	$ 10.32
Unrecognized share-based compensation expense	$ 2.0
Weighted average period of recognition	1 year 7 months 0 days
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Roll Forward
Outstanding at beginning of year	1,820,594
Granted	125,561	356,900	210,582
Exercised	(314,390)
Forfeited or expired	(9,950)
Outstanding at end of year	1,621,815	1,820,594
Exercisable	1,202,541
Assumptions:
Expected life	6 years 0 months 0 days	6 years 0 months 0 days	6 years 0 months 0 days
Expected volatility	18.30%	17.60%	15.60%
Risk-free interest rate	1.00%	1.10%	2.70%
Dividend yield	2.30%	2.80%	2.80%
Warrants [Member]
Share Based Compensation Arrangements - Other details
Weighted average remaining contractual term	3 years 0 months 0 days
Weighted average exercise price, exercises during period	$ 32.9
Weighted average exercise price	$ 32.34
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Roll Forward
Granted	27,655
Released	(2,390)
Outstanding at end of year	8,853