Share-Based Payment Arrangements (Summary of Option Activity) (Details) - Options [Member] $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding at Beginning | shares	46,865,000
Number of Shares, Options Converted at Acquisition | shares	20,530,000
Number of Shares, Exercised/Released | shares	(18,969,000)
Number of Shares, Outstanding at Ending | shares	48,426,000	46,865,000
Number of Shares, Exercisable at Ending | shares	48,426,000
Weighted Average Exercise Price, Outstanding at Beginning | $ / shares	$ 31.88
Weighted Average Exercise Price, Options Converted at Acquisition | $ / shares	46.76
Weighted Average Exercise Price, Exercised/Released | $ / shares	$ 31.54
Weighted Average Exercise Price, Outstanding at Ending | $ / shares	38.32	$ 31.88
Weighted Average Exercise Price, Exercisable at Ending | $ / shares	$ 38.32
Weighted Average Remaining Contractual Term (Years)	1 year 6 months	2 years 7 months 6 days
Weighted Average Remaining Contractual Term (Years), Exercisable at Ending	1 year 6 months
Aggregate Intrinsic Value, Outstanding at Beginning | $	$ 164
Aggregate Intrinsic Value, Exercised/Released | $	172
Aggregate Intrinsic Value, Outstanding at Ending | $	174	$ 164
Aggregate Intrinsic Value, Exercisable at Ending | $	$ 174