Long-Term Debt And Short-Term Borrowings (Interest Rates) (Details) - Secured Debt - Senior Secured Credit Facility Due January 2022	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2017
Euro/AUD/CDN | 4.00 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.50%
Euro/AUD/CDN | ≤ 4.00 to 1.00 and 3.50 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.25%
Euro/AUD/CDN | ≤ 3.50 to 1.00 and 3.00 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.00%	2.00%
Euro/AUD/CDN | ≤ 3.00 to 1.00 and 2.00 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.50%
Euro/AUD/CDN | ≤ 2.00 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.25%
Base Rate | 4.00 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.50%
Base Rate | ≤ 4.00 to 1.00 and 3.50 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.25%
Base Rate | ≤ 3.50 to 1.00 and 3.00 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.00%	1.00%
Base Rate | ≤ 3.00 to 1.00 and 2.00 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			0.50%
Base Rate | ≤ 2.00 to 1.00
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			0.25%
Minimum | Eurodollar
Debt Instrument [Line Items]
Debt Instrument Base Rate	0.00%