Share-Based Awards (Details - Narrative) shares in Millions	12 Months Ended
	Dec. 31, 2015 shares
Non-Employee Directors [Member]
Non-employee directors stock plan [Line Items]
Number of share-based awards authorized	1.2
Shares remaining for issuance	0.3
Non-Employee Directors [Member] | RSU [Member]
Non-employee directors stock plan [Line Items]
Number of share-based awards authorized	0.8
Non-Employee Directors [Member] | Share Options and SSARs [Member]
Non-employee directors stock plan [Line Items]
Number of share-based awards authorized	0.4
Non-Employee Directors [Member] | Share Options and SSARs granted after to May 2012 [Member] | Share Options and SSARs [Member]
Non-employee directors stock plan [Line Items]
Contractual term, in years	10 years
Vesting period, in years	3 years
Non-Employee Directors [Member] | RSU Granted Post May 2010 [Member] | RSU [Member]
Non-employee directors stock plan [Line Items]
Vesting period, in years	5 years
Delivery date restrictions, in years	0 years
Directors Percentage of RSUs Elected	60.00%
Directors Percentage Cash Elected In Lieu Of RSUs	40.00%
Employee Share Purchase Plan [Member]
Employee Share Purchase Plans [Line Items]
Length of offering period, in months	12 months
Number of purchase periods allowed under the plan	2
Length of purchase periods, in months	6 months
Contribution range low	1.00%
Contribution range high	10.00%
Discount on fair value	15.00%
Swiss Share Purchase Plan [Member]
Employee Share Purchase Plans [Line Items]
Number of purchase periods allowed under the plan	2
Length of purchase periods, in months	6 months
Contribution range low	1.00%
Contribution range high	8.00%
Discount on fair value	40.00%
Restriction on transfer, in years	2 years
Minimum Working Hours To Qualify	20
Swiss Share Purchase Plan [Member] | Switzerland, Francs
Employee Share Purchase Plans [Line Items]
Contribution limit maximum, in CHF	5,000