Borrowings - Debt Instrument Redemption (Details)	6 Months Ended
	Jun. 30, 2017
2024 Dollar Senior Notes [Member] | 2019 [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	103.656%
2024 Dollar Senior Notes [Member] | 2020 [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	102.438%
2024 Dollar Senior Notes [Member] | 2021 [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	101.219%
2024 Dollar Senior Notes [Member] | 2022 and thereafter [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	100.00%
2024 Euro Senior Notes [Member] | 2019 [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	103.188%
2024 Euro Senior Notes [Member] | 2020 [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	102.125%
2024 Euro Senior Notes [Member] | 2021 [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	101.063%
2024 Euro Senior Notes [Member] | 2022 and thereafter [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	100.00%
2025 Euro Senior Notes [Member] | 2019 [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	102.813%
2025 Euro Senior Notes [Member] | 2020 [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	101.875%
2025 Euro Senior Notes [Member] | 2021 [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	100.938%
2025 Euro Senior Notes [Member] | 2022 and thereafter [Member]
Debt Instrument, Redemption [Line Items]
Debt instrument, redemption price, percentage	100.00%