Derivatives (Details) - Jun. 30, 2015 € in Millions, £ in Millions, bbl in Millions, ZAR in Millions, SGD in Millions, SEK in Millions, MXN in Millions, COP in Millions, CLP in Millions, CAD in Millions, AUD in Millions, $ in Millions | ZAR$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUDbbl | SGD$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD | SEK$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD | MXN$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD | GBP (£)$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD | EUR (€)$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD | COP$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD | CLP$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD | CAD$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD | AUD$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD | USD ($)$ / bbl$ / ZAR$ / SGD$ / SEK$ / MXN$ / £$ / €$ / COP$ / CLP$ / CAD$ / AUD |
Derivatives designated as hedging instruments | Fair value hedges | 2015 | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Notional value of commodity contracts | bbl | 5.4 | | | | | | | | | | |
Weighted Average Fixed Price | $ / bbl | 53.090 | 53.090 | 53.090 | 53.090 | 53.090 | 53.090 | 53.090 | 53.090 | 53.090 | 53.090 | 53.090 |
Weighted Average Mark-to-Market | $ / bbl | 0.611 | 0.611 | 0.611 | 0.611 | 0.611 | 0.611 | 0.611 | 0.611 | 0.611 | 0.611 | 0.611 |
Fair Value Amount | | | | | | | | | | | $ 3.3 |
Derivatives designated as hedging instruments | Fair value hedges | Commodity contracts | 2016 | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Notional value of commodity contracts | bbl | 0.1 | | | | | | | | | | |
Weighted Average Fixed Price | $ / bbl | 82.308 | 82.308 | 82.308 | 82.308 | 82.308 | 82.308 | 82.308 | 82.308 | 82.308 | 82.308 | 82.308 |
Weighted Average Mark-to-Market | $ / bbl | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Fair Value Amount | | | | | | | | | | | $ 0.1 |
Derivatives not designated as hedging instruments | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Fair Value Amount | | | | | | | | | | | $ 20.1 |
Derivatives not designated as hedging instruments | Commodity contracts | Long | 2015 | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Notional value of commodity contracts | bbl | 32.5 | | | | | | | | | | |
Weighted Average Fixed Price | $ / bbl | 48.561 | 48.561 | 48.561 | 48.561 | 48.561 | 48.561 | 48.561 | 48.561 | 48.561 | 48.561 | 48.561 |
Weighted Average Mark-to-Market | $ / bbl | (2.025) | (2.025) | (2.025) | (2.025) | (2.025) | (2.025) | (2.025) | (2.025) | (2.025) | (2.025) | (2.025) |
Fair Value Amount | | | | | | | | | | | $ (65.8) |
Derivatives not designated as hedging instruments | Commodity contracts | Long | 2016 | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Notional value of commodity contracts | bbl | 10.6 | | | | | | | | | | |
Weighted Average Fixed Price | $ / bbl | 47.520 | 47.520 | 47.520 | 47.520 | 47.520 | 47.520 | 47.520 | 47.520 | 47.520 | 47.520 | 47.520 |
Weighted Average Mark-to-Market | $ / bbl | (1.311) | (1.311) | (1.311) | (1.311) | (1.311) | (1.311) | (1.311) | (1.311) | (1.311) | (1.311) | (1.311) |
Fair Value Amount | | | | | | | | | | | $ (13.9) |
Derivatives not designated as hedging instruments | Commodity contracts | Long | 2017 | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Notional value of commodity contracts | bbl | 0.3 | | | | | | | | | | |
Weighted Average Fixed Price | $ / bbl | 28.350 | 28.350 | 28.350 | 28.350 | 28.350 | 28.350 | 28.350 | 28.350 | 28.350 | 28.350 | 28.350 |
Weighted Average Mark-to-Market | $ / bbl | (1.333) | (1.333) | (1.333) | (1.333) | (1.333) | (1.333) | (1.333) | (1.333) | (1.333) | (1.333) | (1.333) |
Fair Value Amount | | | | | | | | | | | $ (0.4) |
Derivatives not designated as hedging instruments | Commodity contracts | Short | 2015 | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Notional value of commodity contracts | bbl | 28.6 | | | | | | | | | | |
Weighted Average Fixed Price | $ / bbl | 61.486 | 61.486 | 61.486 | 61.486 | 61.486 | 61.486 | 61.486 | 61.486 | 61.486 | 61.486 | 61.486 |
Weighted Average Mark-to-Market | $ / bbl | 3.238 | 3.238 | 3.238 | 3.238 | 3.238 | 3.238 | 3.238 | 3.238 | 3.238 | 3.238 | 3.238 |
Fair Value Amount | | | | | | | | | | | $ 92.6 |
Derivatives not designated as hedging instruments | Commodity contracts | Short | 2016 | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Notional value of commodity contracts | bbl | 8 | | | | | | | | | | |
Weighted Average Fixed Price | $ / bbl | 59.020 | 59.020 | 59.020 | 59.020 | 59.020 | 59.020 | 59.020 | 59.020 | 59.020 | 59.020 | 59.020 |
Weighted Average Mark-to-Market | $ / bbl | 1.150 | 1.150 | 1.150 | 1.150 | 1.150 | 1.150 | 1.150 | 1.150 | 1.150 | 1.150 | 1.150 |
Fair Value Amount | | | | | | | | | | | $ 9.2 |
Derivatives not designated as hedging instruments | Commodity contracts | Short | 2017 | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Notional value of commodity contracts | bbl | 0.4 | | | | | | | | | | |
Weighted Average Fixed Price | $ / bbl | 28.570 | 28.570 | 28.570 | 28.570 | 28.570 | 28.570 | 28.570 | 28.570 | 28.570 | 28.570 | 28.570 |
Weighted Average Mark-to-Market | $ / bbl | 1.750 | 1.750 | 1.750 | 1.750 | 1.750 | 1.750 | 1.750 | 1.750 | 1.750 | 1.750 | 1.750 |
Fair Value Amount | | | | | | | | | | | $ 0.7 |
Derivatives not designated as hedging instruments | Commodity contracts | Short | 2018 | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Notional value of commodity contracts | bbl | 0.1 | | | | | | | | | | |
Weighted Average Fixed Price | $ / bbl | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 |
Weighted Average Mark-to-Market | $ / bbl | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
Fair Value Amount | | | | | | | | | | | $ 0.3 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | AUD | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | AUD | | | | | | | | | | AUD 18.4 | |
Weighted Average Mark-to-Market | $ / AUD | (0.005) | (0.005) | (0.005) | (0.005) | (0.005) | (0.005) | (0.005) | (0.005) | (0.005) | (0.005) | (0.005) |
Fair Value Amount | | | | | | | | | | | $ (0.1) |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | AUD | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / AUD | 0.774 | 0.774 | 0.774 | 0.774 | 0.774 | 0.774 | 0.774 | 0.774 | 0.774 | 0.774 | 0.774 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | CAD | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | CAD | | | | | | | | | CAD 61.5 | | |
Weighted Average Mark-to-Market | $ / CAD | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 |
Fair Value Amount | | | | | | | | | | | $ 0.3 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | CAD | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / CAD | 1.235 | 1.235 | 1.235 | 1.235 | 1.235 | 1.235 | 1.235 | 1.235 | 1.235 | 1.235 | 1.235 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | CLP | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | CLP | | | | | | | | CLP 1,898.3 | | | |
Weighted Average Mark-to-Market | $ / CLP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Fair Value Amount | | | | | | | | | | | $ 0.1 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | CLP | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / CLP | 626.065 | 626.065 | 626.065 | 626.065 | 626.065 | 626.065 | 626.065 | 626.065 | 626.065 | 626.065 | 626.065 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | COP | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | COP | | | | | | | COP 40,853.2 | | | | |
Weighted Average Mark-to-Market | $ / COP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Fair Value Amount | | | | | | | | | | | $ (0.1) |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | COP | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / COP | 2,516.788 | 2,516.788 | 2,516.788 | 2,516.788 | 2,516.788 | 2,516.788 | 2,516.788 | 2,516.788 | 2,516.788 | 2,516.788 | 2,516.788 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | EUR | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | € | | | | | | € 52.4 | | | | | |
Weighted Average Mark-to-Market | $ / € | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) |
Fair Value Amount | | | | | | | | | | | $ (0.6) |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | EUR | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / € | 1.105 | 1.105 | 1.105 | 1.105 | 1.105 | 1.105 | 1.105 | 1.105 | 1.105 | 1.105 | 1.105 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | GBP | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | £ | | | | | £ 137.5 | | | | | | |
Weighted Average Mark-to-Market | $ / £ | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) | (0.011) |
Fair Value Amount | | | | | | | | | | | $ (1.5) |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | GBP | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / £ | 1.550 | 1.550 | 1.550 | 1.550 | 1.550 | 1.550 | 1.550 | 1.550 | 1.550 | 1.550 | 1.550 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | MXN | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | MXN | | | | MXN 2,372.2 | | | | | | | |
Weighted Average Mark-to-Market | $ / MXN | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Fair Value Amount | | | | | | | | | | | $ (0.3) |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | MXN | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / MXN | 15.371 | 15.371 | 15.371 | 15.371 | 15.371 | 15.371 | 15.371 | 15.371 | 15.371 | 15.371 | 15.371 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | SEK | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | SEK | | | SEK 33 | | | | | | | | |
Weighted Average Mark-to-Market | $ / SEK | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 | 0.003 |
Fair Value Amount | | | | | | | | | | | $ 0.1 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | SEK | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / SEK | 8.566 | 8.566 | 8.566 | 8.566 | 8.566 | 8.566 | 8.566 | 8.566 | 8.566 | 8.566 | 8.566 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | SGD | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | SGD | | SGD 65.7 | | | | | | | | | |
Weighted Average Mark-to-Market | $ / SGD | (0.002) | (0.002) | (0.002) | (0.002) | (0.002) | (0.002) | (0.002) | (0.002) | (0.002) | (0.002) | (0.002) |
Fair Value Amount | | | | | | | | | | | $ (0.1) |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | SGD | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / SGD | 1.345 | 1.345 | 1.345 | 1.345 | 1.345 | 1.345 | 1.345 | 1.345 | 1.345 | 1.345 | 1.345 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | ZAR | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | ZAR | ZAR 120.2 | | | | | | | | | | |
Weighted Average Mark-to-Market | $ / ZAR | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 |
Fair Value Amount | | | | | | | | | | | $ 0.1 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2015 | ZAR | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / ZAR | 12.201 | 12.201 | 12.201 | 12.201 | 12.201 | 12.201 | 12.201 | 12.201 | 12.201 | 12.201 | 12.201 |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2016 | GBP | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Non-Designated, Notional amount of foreign currency contracts | £ | | | | | £ 27.3 | | | | | | |
Weighted Average Mark-to-Market | $ / £ | (0.018) | (0.018) | (0.018) | (0.018) | (0.018) | (0.018) | (0.018) | (0.018) | (0.018) | (0.018) | (0.018) |
Fair Value Amount | | | | | | | | | | | $ (0.5) |
Derivatives not designated as hedging instruments | Foreign currency contracts | 2016 | GBP | Weighted Average | | | | | | | | | | | |
Derivative instruments, at their respective fair value positions | | | | | | | | | | | |
Weighted Average Fixed Price | $ / £ | 1.552 | 1.552 | 1.552 | 1.552 | 1.552 | 1.552 | 1.552 | 1.552 | 1.552 | 1.552 | 1.552 |